The Plant List — A working list for all plant species

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1188 plant name records match your search criteria Opuntia. The results are below.

The names found have these generic epithets:

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See "Status", "Confidence level", "Source" for definitions.

Name Status Confi­dence level Source Date supplied
Opuntia abjecta Small ex Britton & Rose Synonym L TRO
Opuntia abyssi Hester Synonym M WCSP (in review)
Opuntia acanthocarpa Engelm. & J.M.Bigelow Synonym M WCSP (in review)
Opuntia acanthocarpa var. coloradensis L.D. Benson Synonym L TRO
Opuntia acanthocarpa subsp. ganderi C.B.Wolf Synonym L WCSP (in review)
Opuntia acanthocarpa var. ganderi (C.B. Wolf) L.D. Benson Synonym L TRO
Opuntia acanthocarpa var. major (Engelm. & J.M. Bigelow) L.D. Benson Synonym L TRO
Opuntia acanthocarpa var. ramosa Peebles Synonym L TRO
Opuntia acanthocarpa var. thornberi (Thornber & Bonker) L.D. Benson Synonym L TRO
Opuntia acaulis Ekman & Werderm. Unresolved L WCSP (in review)
Opuntia aciculata Griffiths Accepted M WCSP (in review)
Opuntia acracantha Walp. Unresolved L WCSP (in review)
Opuntia aequatorialis Britton & Rose Accepted M TRO
Opuntia × aequitorialis Britton & Rose (pro sp.) Unresolved L TRO
Opuntia affinis Griffiths Synonym M TRO
Opuntia aggeria Ralston & Hilsenb. Synonym M TRO
Opuntia agglomerata A. Berger Synonym M TRO
Opuntia airampo Phil. Unresolved L WCSP (in review)
Opuntia alamosensis Britton & Rose Synonym M TRO
Opuntia albicans Salm-Dyck Unresolved L WCSP (in review)
Opuntia albiflora K. Schum. Synonym M TRO
Opuntia albisaetacens Backeb. Synonym M TRO
Opuntia albisetosa Hildm. ex Hirscht Unresolved L WCSP (in review)
Opuntia albispinosa Mieckley ex Lindemuth & Dams Unresolved L WCSP (in review)
Opuntia alcahes F.A.C.Weber Synonym M WCSP (in review)
Opuntia alcerrecensis Iliff Unresolved L WCSP (in review)
Opuntia alexanderi Britton & Rose Synonym M TRO
Opuntia alfagayucca Karw. ex Salm-Dyck Unresolved L WCSP (in review)
Opuntia alko-tuna Cárdenas Synonym M TRO
Opuntia allairei Griffiths Synonym M TRO
Opuntia alpicola K.Schum. ex Dams Unresolved L WCSP (in review)
Opuntia alpina Gillies ex Pfeiff. Unresolved L WCSP (in review)
Opuntia alta Griffiths Synonym M TRO
Opuntia altomagdalenensis Xhonneux Unresolved L WCSP (in review)
Opuntia amarilla Griffiths Unresolved L WCSP (in review)
Opuntia ambigua Link ex Ten. Unresolved L WCSP (in review)
Opuntia ammophila Small Accepted M TRO
Opuntia amyclaea Ten. Synonym M WCSP (in review)
Opuntia anacantha Speg. Accepted M TRO
Opuntia anacantha var. utkilio (Speg.) R. Kiesling Accepted L TRO
Opuntia anahuacensis Griffiths Synonym L TRO
Opuntia × andersonii H.M.Hern., Gómez-Hin. & Bárcenas Unresolved L WCSP (in review)
Opuntia andicola Pfeiff. Synonym M TRO
Opuntia angusta Meinsh. Unresolved L WCSP (in review)
Opuntia angustata Engelm. & J.M. Bigelow Synonym M TRO
Opuntia angustata var. comonduensis J.M. Coult. Synonym L TRO
Opuntia anteojoensis Pinkava Synonym M WCSP (in review)
Opuntia antillana Britton & Rose Synonym M TRO
Opuntia aoracantha Lem. Synonym M TRO
Opuntia apurimacensis (F. Ritter) R. Crook & Mottram Accepted M TRO
Opuntia aquosa F.A.C.Weber Synonym M WCSP (in review)
Opuntia araucana (A.Cast.) Kiessling Unresolved L WCSP (in review)
Opuntia arborea Rojas Acosta Unresolved L WCSP (in review)
Opuntia arborea Steud. Unresolved L WCSP (in review)
Opuntia arborescens Engelm. Synonym M TRO
Opuntia arborescens var. versicolor (Engelm. ex J.M. Coult.) Dams Synonym L TRO
Opuntia arbuscula Engelm. Synonym M WCSP (in review)
Opuntia arcei Cárdenas Synonym M TRO
Opuntia archiconoidea (F. Ritter) D.R. Hunt Synonym M TRO
Opuntia arechavaletai Speg. Unresolved L TRO
Opuntia arenaria Engelm. Accepted M TRO
Opuntia argentina Griseb. Synonym M TRO
Opuntia arizonica Griffiths Unresolved L WCSP (in review)
Opuntia arkansana Engelm. ex Hirscht Unresolved L WCSP (in review)
Opuntia armata Backeb. Synonym M TRO
Opuntia armata var. panellana Backeb. Synonym L WCSP (in review)
Opuntia arrastradillo Backeb. Accepted M TRO
Opuntia articulata (Pfeiff.) D.R. Hunt Accepted L TRO
Opuntia asplundii (Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia assumptionis K. Schum. Accepted M TRO
Opuntia atacamensis Phil. Unresolved L WCSP (in review)
Opuntia atrispina Griffiths Accepted M TRO
Opuntia atrocapensis Small Accepted M TRO
Opuntia atroglobosa (Backeb. ex F. Ritter) R. Crook & Mottram Accepted M TRO
Opuntia atropes Rose Accepted M TRO
Opuntia atrovirens Speg. Unresolved L WCSP (in review)
Opuntia atroviridis Werderm. & Backeb. Synonym M TRO
Opuntia auberi Pfeiff. Accepted M TRO
Opuntia aulacothele F.A.C.Weber Unresolved L WCSP (in review)
Opuntia aurantiaca Lindl. Accepted M TRO
Opuntia aurea E.M. Baxter Accepted M TRO
Opuntia aureispina (S. Brack & K.D. Heil) Pinkava & B.D. Parfitt Accepted M TRO
Opuntia australis F.A.C.Weber Synonym M WCSP (in review)
Opuntia austrina Small Synonym M TRO
Opuntia ayrampo (Azara) Mottram Unresolved L WCSP (in review)
Opuntia azurea Rose Accepted M TRO
Opuntia backebergii G.D. Rowley Synonym M TRO
Opuntia bahamana Britton & Rose Unresolved L WCSP (in review)
Opuntia bahiensis Britton & Rose Synonym M TRO
Opuntia × bakeri Madsen (pro sp.) Unresolved L TRO
Opuntia bakeri Madsen Accepted M TRO
Opuntia balearica F.A.C.Weber ex Hirscht Unresolved L WCSP (in review)
Opuntia ballii Rose Synonym M TRO
Opuntia barbata K.Brandegee ex J.A.Purpus Unresolved L WCSP (in review)
Opuntia barkleyana (Daston) G.D.Rowley Unresolved L WCSP (in review)
Opuntia bartramii Raf. Unresolved L WCSP (in review)
Opuntia basilaris Engelm. & J.M. Bigelow Accepted M TRO
Opuntia basilaris var. aurea (E.M. Baxter) W.T. Marshall Synonym L TRO
Opuntia basilaris var. basilaris Synonym L TRO
Opuntia basilaris var. brachyclada (Griffiths) Munz Synonym L TRO
Opuntia basilaris var. humistrata (Griffiths) W.T. Marshall Synonym L TRO
Opuntia basilaris var. longiareolata (Clover & Jotter) L.D. Benson Accepted L TRO
Opuntia basilaris var. ramosa Parish Synonym L TRO
Opuntia basilaris var. treleasei (J.M. Coult.) J.M. Coult. ex Toumey Accepted L TRO
Opuntia beckeriana K.Schum. Unresolved L WCSP (in review)
Opuntia bella Britton & Rose Unresolved L WCSP (in review)
Opuntia bensonii Sánchez-Mej. Accepted M TRO
Opuntia bentonii Griffiths Accepted M TRO
Opuntia bergeriana F.A.C.Weber ex A.Berger Synonym M WCSP (in review)
Opuntia bernardina Engelm. ex Parish Synonym M TRO
Opuntia berteroi (Colla) A.E.Hoffm. Unresolved L WCSP (in review)
Opuntia bicolor Phil. Synonym M TRO
Opuntia bigelovii Engelm. Synonym M WCSP (in review)
Opuntia bigelovii var. ciribe W.T. Marshall Synonym L TRO
Opuntia bigelovii var. hoffmannii Fosberg Synonym L WCSP (in review)
Opuntia bisetosa Pittier Accepted M WCSP (in review)
Opuntia bispinosa Backeb. Synonym M TRO
Opuntia blakeana Rose Unresolved L WCSP (in review)
Opuntia blancii (Backeb.) G.D. Rowley Accepted M TRO
Opuntia boldinghii Britton & Rose Accepted M WCSP (in review)
Opuntia boliviana Salm-Dyck Synonym M TRO
Opuntia boliviensis Backeb. Synonym M TRO
Opuntia bonaerensis Speg. Accepted M TRO
Opuntia bonnieae (D.J.Ferguson & R.Kiesling) Halda & Janeba Unresolved L WCSP (in review)
Opuntia bonplandii (Kunth) F.A.C. Weber Synonym M TRO
Opuntia borinquensis Britton & Rose Unresolved L WCSP (in review)
Opuntia brachyacantha (F.Ritter) R.Crook & Mottram Unresolved L WCSP (in review)
Opuntia brachyarthra Engelm. & J.M. Bigelow Synonym M TRO
Opuntia brachyclada Griffiths Synonym M TRO
Opuntia brachyclada subsp. humistrata (Griffiths) Wiggins & C.B. Wolf Unresolved L TRO
Opuntia brachydelphis K.Schum. Unresolved L WCSP (in review)
Opuntia brachyrhopalica (Daston) G.D.Rowley Unresolved L WCSP (in review)
Opuntia bradleyi G.D. Rowley Synonym M TRO
Opuntia bradtiana (J.M. Coult.) K. Brandegee Synonym M TRO
Opuntia brandegeei K. Schum. Synonym M TRO
Opuntia brasiliensis (Willd.) Haw. Synonym M WCSP (in review)
Opuntia brasiliensis subsp. bahiensis (Britton & Rose) P.J. Braun & Esteves Unresolved L TRO
Opuntia brasiliensis subsp. subacarpa (Rizzini & A. Mattos) Braun & Esteves Synonym L TRO
Opuntia bravoana Baxter Accepted M TRO
Opuntia brevispina H.E. Gates Synonym M TRO
Opuntia brittonii González Ortega, Jesús Synonym M TRO
Opuntia bruchii Speg. Synonym M TRO
Opuntia brunneogemmia (F.Ritter) Schlindw. Unresolved L WCSP (in review)
Opuntia brunnescens Britton & Rose Unresolved L WCSP (in review)
Opuntia bulbispina Engelm. Synonym M TRO
Opuntia burrageana Britton & Rose Synonym M TRO
Opuntia cacanapa Griffiths & Hare Synonym M TRO
Opuntia caerulescens Griffiths Synonym M TRO
Opuntia caesia Griffiths Unresolved L WCSP (in review)
Opuntia caespitosa Raf. Unresolved L TRO
Opuntia calacantha Forbes ex W.H.Baxter Unresolved L WCSP (in review)
Opuntia calantha Griffiths Unresolved L WCSP (in review)
Opuntia calcicola Wherry Synonym M TRO
Opuntia californica (Torr. & A. Gray) Coville Synonym L TRO
Opuntia californica var. parkeri (J.M. Coult.) Pinkava Synonym L TRO
Opuntia calmalliana J.M. Coult. Synonym M TRO
Opuntia calva Lem. Unresolved L WCSP (in review)
Opuntia camachoi Espinosa Unresolved L WCSP (in review)
Opuntia camanchica Engelm. & J.M. Bigelow Synonym M TRO
Opuntia campestris Britton & Rose Synonym M TRO
Opuntia × campii M.A. Baker & Pinkava Synonym L TRO
Opuntia camuessa F.A.C. Weber Synonym M TRO
Opuntia canada Griffiths Accepted M TRO
Opuntia candelabriformis hort. ex Pfeiff. Synonym M TRO
Opuntia canina Speg. Synonym M TRO
Opuntia cantabrigiensis Lynch Accepted M TRO
Opuntia canterae Arechav. Unresolved L WCSP (in review)
Opuntia caracassana Salm-Dyck Accepted M WCSP (in review)
Opuntia cardenche Griffiths Synonym M TRO
Opuntia cardiosperma K. Schum. Synonym M TRO
Opuntia cardona F.A.C. Weber Synonym M TRO
Opuntia caribaea Britton & Rose Synonym L WCSP (in review)
Opuntia carnosa A.Usteri Unresolved L WCSP (in review)
Opuntia carolina J.Forbes Unresolved L WCSP (in review)
Opuntia × carstenii R.Puente & C.Hamann Unresolved L WCSP (in review)
Opuntia castillae Griffiths Synonym M TRO
Opuntia catingicola Werderm. Synonym M TRO
Opuntia catocantha Pfeiff. Unresolved L WCSP (in review)
Opuntia cedergreniana Backeb. Unresolved L WCSP (in review)
Opuntia cereiformis F.A.C. Weber Synonym M TRO
Opuntia × cervicornis Späth Unresolved L WCSP (in review)
Opuntia chaetocarpa Griffiths Unresolved L WCSP (in review)
Opuntia chaffeyi Britton & Rose Accepted M TRO
Opuntia chakensis Speg. Synonym M TRO
Opuntia chapistle F.A.C. Weber Synonym M TRO
Opuntia charlestonensis Clokey Unresolved L WCSP (in review)
Opuntia chata Griffiths Unresolved L WCSP (in review)
Opuntia chavena Griffiths Synonym M TRO
Opuntia chiangiana Scheinvar & Manzanero Accepted M TRO
Opuntia chichensis (Cárdenas) G.D. Rowley Synonym M TRO
Opuntia chichensis var. colchana (Cárdenas) G.D. Rowley Synonym L TRO
Opuntia chihuahuensis Rose Synonym M TRO
Opuntia chilensis (Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia chinensis (Roxb.) K. Koch Synonym M TRO
Opuntia chisosensis (M.S. Anthony) D.J. Ferguson Synonym M TRO
Opuntia chlorotica Engelm. & J.M. Bigelow Accepted M TRO
Opuntia chlorotica var. santarita Griffiths & Hare Synonym L TRO
Opuntia cholla F.A.C.Weber Synonym M WCSP (in review)
Opuntia chuquisacana Cárdenas Synonym M TRO
Opuntia cineracea Wiggins Synonym M TRO
Opuntia ciribe Engelm. Synonym M TRO
Opuntia clavarioides Pfeiff. Synonym M TRO
Opuntia clavata Engelm. Synonym M TRO
Opuntia clavellina Engelm. ex J.M. Coult. Synonym M TRO
Opuntia coccinea Pfeiff. Unresolved L WCSP (in review)
Opuntia coccinellifera Steud. Unresolved L WCSP (in review)
Opuntia cochabambensis Cárdenas Synonym M TRO
Opuntia cochenillifera DC. Unresolved L WCSP (in review)
Opuntia cochinellifera (L.) Mill. Synonym M WCSP (in review)
Opuntia × cochinera Griffiths Accepted M TRO
Opuntia coerulea Gillies ex Pfeiff. Unresolved L WCSP (in review)
Opuntia cognata (F. Ritter) P.J. Braun & Esteves Accepted M TRO
Opuntia coindetti F.A.C.Weber Unresolved L WCSP (in review)
Opuntia colorea (F. Ritter) D.R. Hunt Accepted M TRO
Opuntia colubrina A. Cast. Accepted M TRO
Opuntia columbiana Griffiths Unresolved L WCSP (in review)
Opuntia × columbiana Griffiths (pro sp.) Accepted M TRO
Opuntia comonduensis (J.M. Coult.) Britton & Rose Synonym M TRO
Opuntia compressa J.F. Macbr. Synonym M TRO
Opuntia compressa var. allairei (Griffiths) Weniger Unresolved L TRO
Opuntia compressa var. austrina (Small) L.D. Benson Synonym L TRO
Opuntia compressa var. fuscoatra (Engelm.) Weniger Synonym L TRO
Opuntia compressa var. macrorhiza (Engelm.) L.D. Benson Synonym L TRO
Opuntia compressa var. stenochila (Engelm. & J.M. Bigelow) Weniger Unresolved L TRO
Opuntia confusa Griffiths Unresolved L WCSP (in review)
Opuntia × congesta Griffiths Synonym M WCSP (in review)
Opuntia congesta Griffiths Synonym M TRO
Opuntia conjungens (F. Ritter) P.J. Braun & Esteves Synonym M TRO
Opuntia conoidea (F. Ritter) G.D. Rowley Synonym M TRO
Opuntia convexa Mackensen Unresolved L WCSP (in review)
Opuntia corallicola (Small) Werderm. Synonym M TRO
Opuntia cordobensis Speg. Synonym M TRO
Opuntia corotilla K. Schum. ex Vaupel Synonym M TRO
Opuntia corotilla var. aurantiaciflora (Rauh & Backeb.) G.D. Rowley Synonym L TRO
Opuntia corrugata Salm-Dyck Unresolved L WCSP (in review)
Opuntia costigera Miq. Unresolved L WCSP (in review)
Opuntia covillei Britton & Rose Synonym M TRO
Opuntia crassa Haw. Accepted M TRO
Opuntia crassicylindrica (Rauh & Backeb.) G.D. Rowley Accepted M TRO
Opuntia crassispina (F. Ritter) D.R. Hunt Synonym M TRO
Opuntia cretochaeta Griffiths Synonym M TRO
Opuntia crinifera Salm-Dyck ex Pfeiff. Unresolved L WCSP (in review)
Opuntia crispicrinita (Rauh & Backeb.) G.D. Rowley Accepted M TRO
Opuntia crispicrinita var. cylindracea (Rauh & Backeb.) G.D. Rowley Accepted L TRO
Opuntia cristata Salm-Dyck Unresolved L WCSP (in review)
Opuntia cruciata Pfeiff. Unresolved L WCSP (in review)
Opuntia crystalenia Griffiths Accepted M TRO
Opuntia cubensis Britton & Rose Accepted M TRO
Opuntia cucumiformis Griffiths Unresolved L WCSP (in review)
Opuntia cuija (Griffiths & Hare) Britton & Rose Synonym M TRO
Opuntia cumulicola Small Accepted M TRO
Opuntia curassavica (L.) Mill. Accepted M WCSP (in review)
Opuntia curvispina Griffiths Unresolved L TRO
Opuntia × curvispina Griffiths (pro sp.) Accepted M TRO
Opuntia cyanea Griffiths Unresolved L WCSP (in review)
Opuntia cyanella Griffiths Unresolved L WCSP (in review)
Opuntia cyclodes (Engelm. & J.M. Bigelow) Rose Accepted M TRO
Opuntia cylindrarticulata (Cárdenas) G.D. Rowley Synonym M TRO
Opuntia cylindrica (Lam.) DC. Accepted M TRO
Opuntia cylindrolanata (Rauh & Backeb.) G.D. Rowley Accepted M TRO
Opuntia cymochila Engelm. & J.M. Bigelow Synonym M TRO
Opuntia dactylifera Vaupel Synonym M TRO
Opuntia darrahiana F.A.C.Weber Unresolved L WCSP (in review)
Opuntia darwinii Hensl. Synonym M WCSP (in review)
Opuntia davisii Engelm. & J.M.Bigelow Synonym M WCSP (in review)
Opuntia deamii Rose Accepted M WCSP (in review)
Opuntia debreczyi Szutorisz Unresolved L WCSP (in review)
Opuntia decipiens DC. Unresolved L WCSP (in review)
Opuntia decumana (Willd.) Haw. Synonym M WCSP (in review)
Opuntia decumbens Salm-Dyck Accepted M WCSP (in review)
Opuntia decumbens var. scheinvariana E. Paniagua Synonym L TRO
Opuntia deflexa Lem. Unresolved L WCSP (in review)
Opuntia dejecta Salm-Dyck Synonym M WCSP (in review)
Opuntia delaetiana (F.A.C. Weber) Vaupel Accepted M TRO
Opuntia delicata Rose Synonym M TRO
Opuntia deltica Griffiths Unresolved L WCSP (in review)
Opuntia demissa Griffiths Accepted M TRO
Opuntia demorenia Forbes Unresolved L WCSP (in review)
Opuntia demoriana C.F.Först. Unresolved L WCSP (in review)
Opuntia densiaculeata (Backeb.) G.D.Rowley Synonym L WCSP (in review)
Opuntia densispina Ralston & Hilsenb. Accepted M TRO
Opuntia denudata F.A.C.Weber Unresolved L WCSP (in review)
Opuntia depauperata Britton & Rose Synonym M WCSP (in review)
Opuntia deppei H.L.Wendl. ex C.F.Först. Unresolved L WCSP (in review)
Opuntia depressa Rose Accepted M TRO
Opuntia × deserta Griffiths Synonym M WCSP (in review)
Opuntia diademata Lem. Synonym M TRO
Opuntia diademata var. oligacantha Speg. Synonym L TRO
Opuntia dichotoma J.Forbes Unresolved L WCSP (in review)
Opuntia diffusa Pfeiff. Unresolved L WCSP (in review)
Opuntia digitalis F.A.C.Weber Unresolved L WCSP (in review)
Opuntia diguetii F.A.C.Weber Synonym M WCSP (in review)
Opuntia dillei Griffiths Synonym M TRO
Opuntia dillenii (Ker Gawl.) Haw. Accepted M WCSP (in review)
Opuntia dillenii var. tehuantepecana Bravo Synonym L TRO
Opuntia dimorpha C.F.Först. Unresolved L WCSP (in review)
Opuntia diplacantha A.Berger Unresolved L WCSP (in review)
Opuntia discata Griffiths Synonym M TRO
Opuntia discolor Britton & Rose Accepted M TRO
Opuntia distans Britton & Rose Synonym M TRO
Opuntia diversispina Griffiths Unresolved L WCSP (in review)
Opuntia dobbieana Britton & Rose Synonym M TRO
Opuntia dolabriformis Pfeiff. Unresolved L WCSP (in review)
Opuntia domeykoensis (F. Ritter) D.R. Hunt Synonym M TRO
Opuntia domingensis Britton & Rose Unresolved L WCSP (in review)
Opuntia drummondii Graham Synonym M TRO
Opuntia dulcis Engelm. Synonym M TRO
Opuntia dumetorum A. Berger Synonym M TRO
Opuntia durangensis Britton & Rose Accepted M TRO
Opuntia duvalioides (Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia eborina C.F.Först. ex Haage Unresolved L WCSP (in review)
Opuntia eburnea Lem. Unresolved L WCSP (in review)
Opuntia eburnispina Small Accepted M TRO
Opuntia echinacea (F.Ritter) A.E.Hoffm. Unresolved L WCSP (in review)
Opuntia echinocarpa Engelm. & J.M.Bigelow Synonym M WCSP (in review)
Opuntia echinocarpa var. major Engelm. & J.M. Bigelow Synonym L TRO
Opuntia echinocarpa var. nuda J.M. Coult. Synonym L TRO
Opuntia echinocarpa var. parkeri J.M. Coult. Synonym L TRO
Opuntia echinocarpa var. wolfii L.D.Benson Synonym L WCSP (in review)
Opuntia echios Howell Accepted M TRO
Opuntia echios var. echios Synonym L TRO
Opuntia echios var. gigantea Howell Accepted L TRO
Opuntia echios var. zacana (Howell) E.F. Anderson & Walk. Accepted L TRO
Opuntia edwardsii V.E. Grant & K.A. Grant Accepted M TRO
Opuntia effulgia Griffiths Unresolved L WCSP (in review)
Opuntia eichlamii Rose Accepted M TRO
Opuntia ekmanii Werderm. Unresolved L WCSP (in review)
Opuntia elata Link & Otto ex Salm-Dyck Accepted M TRO
Opuntia elata var. cardiosperma (K. Schum.) R. Kiesling Accepted L TRO
Opuntia elata var. delaitiana F.A.C. Weber Synonym L TRO
Opuntia elatior Mill. Accepted M WCSP (in review)
Opuntia × elisae D.Guillot & P.Van der Meer Unresolved L WCSP (in review)
Opuntia elizondoana E. Sanchez & Villaseñor Accepted M TRO
Opuntia ellemeetiana Miq. Synonym M TRO
Opuntia ellisiana Griffiths Accepted M TRO
Opuntia × ellisiana Griffiths (pro sp.) Unresolved L TRO
Opuntia elongata (Willd.) Haw. Synonym M WCSP (in review)
Opuntia emoryi Engelm. Synonym M TRO
Opuntia engelmannii Salm-Dyck ex Engelm. Accepted M TRO
Opuntia engelmannii subsp. aciculata (Griffiths) U.Guzmán & Mandujano Synonym L WCSP (in review)
Opuntia engelmannii var. aciculata (Griffiths) Weniger Synonym L WCSP (in review)
Opuntia engelmannii var. aciculata (Griffiths) Bravo Synonym L TRO
Opuntia engelmannii var. alta (Griffiths) Weniger Synonym L TRO
Opuntia engelmannii var. cacanapa (Griffiths & Hare) Weniger Synonym L TRO
Opuntia engelmannii var. cuija Griffiths & Hare Synonym L TRO
Opuntia engelmannii var. cyclodes Engelm. & J.M. Bigelow Synonym L TRO
Opuntia engelmannii var. discata (Griffiths) A. Nelson Synonym L TRO
Opuntia engelmannii var. dulcis (Engelm.) J.M. Coult. ex K. Schum. Accepted L TRO
Opuntia engelmannii subsp. engelmannii Synonym L TRO
Opuntia engelmannii var. engelmannii Synonym L TRO
Opuntia engelmannii var. flavescens (Peebles) L.D. Benson Accepted L TRO
Opuntia engelmannii var. flexospina (Griffiths) B.D.Parfitt & Pinkava Synonym L WCSP (in review)
Opuntia engelmannii subsp. lindheimeri (Engelm.) U. Guzmán & Mandujano Accepted L TRO
Opuntia engelmannii var. lindheimeri (Engelm.) B.D. Parfitt & Pinkava Synonym L TRO
Opuntia engelmannii var. linguiformis (Griffiths) B.D.Parfitt & Pinkava Accepted L WCSP (in review)
Opuntia engelmannii var. littoralis Engelm. Synonym L TRO
Opuntia engelmannii var. megacarpa (Griffiths) Fosberg Synonym L TRO
Opuntia engelmannii var. subarmata (Griffiths) Weniger Synonym L TRO
Opuntia engelmannii var. texana (Griffiths) Weniger Synonym L TRO
Opuntia engelmannii var. wootonii (Griffiths) Fosberg Synonym L TRO
Opuntia eocarpa Griffiths Unresolved L WCSP (in review)
Opuntia erecta K.Schum. Unresolved L WCSP (in review)
Opuntia erectoclada Backeb. Unresolved L WCSP (in review)
Opuntia erinacea Engelm. & J.M. Bigelow Accepted M TRO
Opuntia erinacea var. aurea (E.M. Baxter) S.L. Welsh Synonym L TRO
Opuntia erinacea var. columbiana (Griffiths (pro sp.)) L.D. Benson Synonym L TRO
Opuntia erinacea var. erinacea Synonym L TRO
Opuntia erinacea var. hystricina (Engelm. & J.M. Bigelow) L.D. Benson Synonym L TRO
Opuntia erinacea var. rhodantha (K. Schum.) L.D. Benson Synonym L TRO
Opuntia erinacea var. ursina (F.A.C. Weber) Parish Synonym L TRO
Opuntia erinacea var. utahensis (Engelm.) L.D. Benson Accepted L TRO
Opuntia erinacea var. xanthostemma (K. Schum.) L.D. Benson Synonym L TRO
Opuntia erythrocentron Lem. ex C.F.Först. Unresolved L WCSP (in review)
Opuntia estevesii P.J.Braun Unresolved L WCSP (in review)
Opuntia exaltata A. Berger Synonym M TRO
Opuntia excelsa Sánchez-Mej. Accepted M TRO
Opuntia expansa Griffiths Unresolved L WCSP (in review)
Opuntia extensa Salm-Dyck ex Pfeiff. Unresolved L WCSP (in review)
Opuntia exuviata DC. Unresolved L WCSP (in review)
Opuntia exuviata Salm-Dyck Unresolved L WCSP (in review)
Opuntia exuviata var. stellata (Salm-Dyck) Lem. ex Labour. Unresolved L TRO
Opuntia exuviatostellata Lem. ex Labour. Unresolved L WCSP (in review)
Opuntia falcata Ekman & Werderm. Unresolved L WCSP (in review)
Opuntia feracantha Britton & Rose Unresolved L TRO
Opuntia ferocior (Backeb.) G.D. Rowley Synonym M TRO
Opuntia ferox Haw. Unresolved L WCSP (in review)
Opuntia ferruginispina Griffiths Unresolved L WCSP (in review)
Opuntia festiva Sencke ex Haage Unresolved L WCSP (in review)
Opuntia ficus-barbarica A.Berger Synonym M WCSP (in review)
Opuntia ficus-indica (L.) Mill. Accepted M WCSP (in review)
Opuntia ficus-indica f. amyclaea (Ten.) Schelle Synonym L WCSP (in review)
Opuntia ficus-indica var. amyclaea (Ten.) A.Berger Synonym L WCSP (in review)
Opuntia ficus-indica var. decumana (Willd.) Speg. Synonym L TRO
Opuntia ficus-indica var. gymnocarpa (F.A.C. Weber) Speg. Accepted L TRO
Opuntia filipendula Engelm. Synonym M TRO
Opuntia flavescens Peebles Synonym M TRO
Opuntia flavicans Lem. Unresolved L WCSP (in review)
Opuntia flavispina C.F.Först. Unresolved L WCSP (in review)
Opuntia flexibilis Pfeiff. Unresolved L WCSP (in review)
Opuntia flexospina Griffiths Synonym M WCSP (in review)
Opuntia flexuosa (Backeb.) G.D. Rowley Synonym M TRO
Opuntia floccosa Salm-Dyck Synonym M TRO
Opuntia floccosa var. crassior (Backeb.) G.D. Rowley Unresolved L TRO
Opuntia floccosa var. ovoides (Rauh & Backeb.) G.D. Rowley Unresolved L TRO
Opuntia floribunda Lem. Unresolved L WCSP (in review)
Opuntia foliosa Salm-Dyck ex DC. Unresolved L WCSP (in review)
Opuntia formidabilis Walton Unresolved L WCSP (in review)
Opuntia × fosbergii C. B. Wolf (pro sp.) Accepted M TRO
Opuntia fragilis (Nutt.) Haw. Accepted M WCSP (in review)
Opuntia fragilis var. brachyarthra (Engelm. & J.M. Bigelow) J.M. Coult. Synonym L TRO
Opuntia fragilis var. frutescens Engelm. & A. Gray Synonym L TRO
Opuntia frigida (F. Ritter) G. Navarro Synonym M TRO
Opuntia frustulenta Gibbes Unresolved L WCSP (in review)
Opuntia frutescens Engelm. Synonym M TRO
Opuntia frutescens var. brevispina Engelm. Synonym L TRO
Opuntia frutescens var. longispina Engelm. Synonym L TRO
Opuntia fulgens Engelm. Unresolved L WCSP (in review)
Opuntia fulgida Engelm. Synonym M WCSP (in review)
Opuntia fulgida var. hoffmannii (Fosberg) L.D. Benson Synonym L TRO
Opuntia fulgida var. mamillata (Schott ex Engelm.) J.M. Coult. Synonym L TRO
Opuntia fuliginosa Griffiths Accepted M TRO
Opuntia fulvicoma (Rauh & Backeb.) G.D. Rowley Synonym M TRO
Opuntia fulvicoma var. bicolor (Rauh & Backeb.) G.D. Rowley Synonym L TRO
Opuntia fulvispina Salm-Dyck ex Pfeiff. Unresolved L WCSP (in review)
Opuntia funalis (Britton & Rose) G.D.Rowley Unresolved L WCSP (in review)
Opuntia furiosa H.L.Wendl. Unresolved L WCSP (in review)
Opuntia fuscoatra Engelm. Synonym M TRO
Opuntia fuscolineata Starm. & Mucher Unresolved L WCSP (in review)
Opuntia fusicaulis Griffiths Unresolved L WCSP (in review)
Opuntia fusiformis Engelm. & J.M.Bigelow Unresolved L WCSP (in review)
Opuntia galapageia Hemsl. Accepted M TRO
Opuntia galapageia var. galapageia Synonym L TRO
Opuntia galapageia var. gigantea Backeb. Synonym L TRO
Opuntia galapageia var. helleri Backeb. Synonym L TRO
Opuntia galapageia var. insularis Backeb. Synonym L TRO
Opuntia galapageia var. saxicola Backeb. Synonym L TRO
Opuntia galapageia var. zacana Backeb. Synonym L TRO
Opuntia galeottii De Smet ex Miq. Unresolved L WCSP (in review)
Opuntia galerasensis (F. Ritter) D.R. Hunt Synonym M TRO
Opuntia ganderi (C.B. Wolf) Rebman & Pinkava Synonym M TRO
Opuntia geissei Phil. Unresolved L WCSP (in review)
Opuntia geometrica A. Cast. Synonym M TRO
Opuntia gilliesii Pfeiff. Unresolved L WCSP (in review)
Opuntia gilvescens Griffiths Accepted M TRO
Opuntia gilvoalba Griffiths Unresolved L WCSP (in review)
Opuntia glaberrima Pfeiff. Unresolved L WCSP (in review)
Opuntia glauca Pfeiff. Unresolved L WCSP (in review)
Opuntia glaucescens Salm-Dyck Synonym M TRO
Opuntia glaucophylla H.L.Wendl. ex Pfeiff. Unresolved L WCSP (in review)
Opuntia glomerata Haw. Synonym M TRO
Opuntia golziana K.Schum. Unresolved L WCSP (in review)
Opuntia gomei Griffiths Unresolved L WCSP (in review)
Opuntia gorda Griffiths Synonym M TRO
Opuntia gosseliniana F.A.C. Weber Synonym M TRO
Opuntia gosseliniana var. santarita (Griffiths & Hare) L.D. Benson Synonym L TRO
Opuntia gracilicylindrica (Wiegand & Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia gracilior Lem. Unresolved L WCSP (in review)
Opuntia gracilis Pfeiff. Synonym M TRO
Opuntia grahamii Engelm. Synonym M TRO
Opuntia grandiflora Engelm. Accepted M TRO
Opuntia grandis Pfeiff. Accepted M TRO
Opuntia grata Phil. Unresolved L WCSP (in review)
Opuntia greenei Britton & Rose Unresolved L TRO
Opuntia gregoriana Griffiths Unresolved L WCSP (in review)
Opuntia griffithsiana Mackensen Unresolved L WCSP (in review)
Opuntia grosseiana F.A.C.Weber Unresolved L WCSP (in review)
Opuntia grossieana F.A.C.Weber Unresolved L WCSP (in review)
Opuntia guanicana Gürke Unresolved L WCSP (in review)
Opuntia guatemalensis Britton & Rose Accepted M WCSP (in review)
Opuntia guatiensis D.R. Hunt Unresolved L TRO
Opuntia guerrana Griffiths Synonym M TRO
Opuntia guilanchi Griffiths Accepted M TRO
Opuntia gymnocarpa F.A.C. Weber Synonym M TRO
Opuntia haematacantha (Backeb.) Borg Synonym M TRO
Opuntia haematocarpa A.Berger Unresolved L WCSP (in review)
Opuntia haitiensis Britton Unresolved L WCSP (in review)
Opuntia halophila Speg. Synonym M TRO
Opuntia hamiltonii (Gates) G.D. Rowley Synonym M TRO
Opuntia hanburyana F.A.C.Weber ex A.Berger [Unplaced] Unresolved L WCSP (in review)
Opuntia hattoniana Britton & Rose Unresolved L WCSP (in review)
Opuntia heacockiae Arp Synonym M TRO
Opuntia heliabravoana Scheinvar Synonym M TRO
Opuntia heliae Matuda Synonym M TRO
Opuntia helleri K. Schum. ex B.L. Rob. Accepted M TRO
Opuntia hempeliana K.Schum. Unresolved L WCSP (in review)
Opuntia hernandezii DC. Synonym M TRO
Opuntia herrfeldtii Kupper Synonym M TRO
Opuntia heteromorpha Phil. Unresolved L WCSP (in review)
Opuntia hickenii Britton & Rose Synonym M TRO
Opuntia hieronymi Griseb. Unresolved L WCSP (in review)
Opuntia hildemanii Frič Unresolved L WCSP (in review)
Opuntia hirschii (Backeb.) G.D. Rowley Synonym M TRO
Opuntia hispanica Griffiths Unresolved L WCSP (in review)
Opuntia hitchcockii González Ortega, Jesús Accepted M TRO
Opuntia hitchenii J.Forbes Unresolved L WCSP (in review)
Opuntia hoffmannii Bravo Synonym M TRO
Opuntia hondurensis Standl. Accepted M WCSP (in review)
Opuntia horizontalis Gillies ex Pfeiff. Unresolved L WCSP (in review)
Opuntia horrida Salm-Dyck ex DC. Unresolved L WCSP (in review)
Opuntia horstii Heinrich Unresolved L WCSP (in review)
Opuntia hossei (Krainz & Graser) G.D.Rowley Unresolved L WCSP (in review)
Opuntia howeyi J.A. Purpus Accepted M TRO
Opuntia huajuapensis Bravo Accepted M TRO
Opuntia hualpaensis Hester Unresolved L WCSP (in review)
Opuntia humahuacana (Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia humifusa (Raf.) Raf. Accepted M WCSP (in review)
Opuntia humifusa var. austrina (Small) Dress Synonym L TRO
Opuntia humifusa var. humifusa Synonym L TRO
Opuntia humifusa subsp. humifusa Synonym L TRO
Opuntia humifusa subsp. minor (Engelm.) R. Crook & Mottram Accepted L TRO
Opuntia humifusa var. vaseyi (J.M. Coult.) A. Heller Synonym L TRO
Opuntia humilis Haw. Unresolved L WCSP (in review)
Opuntia humistrata Griffiths Synonym M TRO
Opuntia hypogaea Werderm. Synonym M TRO
Opuntia hypsophila Speg. Synonym M TRO
Opuntia hyptiacantha F.A.C. Weber Accepted M TRO
Opuntia hystricina Engelm. & J.M. Bigelow Synonym M TRO
Opuntia hystricina var. nicholii (L.D. Benson) Backeb. Synonym L TRO
Opuntia hystricina var. ursina (F.A.C. Weber) Backeb. Synonym L TRO
Opuntia hystrix Griseb. Synonym M WCSP (in review)
Opuntia ianthinantha (F. Ritter) Iliff Synonym M TRO
Opuntia icterica Griffiths Synonym M TRO
Opuntia ignescens Vaupel Synonym M TRO
Opuntia ignota Britton & Rose Synonym M TRO
Opuntia imbricata (Haw.) DC. Synonym M WCSP (in review)
Opuntia imbricata var. argentea M.S. Anthony Synonym L TRO
Opuntia imbricata var. cardenche (Griffiths) Bravo Synonym L TRO
Opuntia imbricata var. lloydii (Rose) Bravo Synonym L TRO
Opuntia impedata Small Synonym M TRO
Opuntia inaequilateralis A.Berger Accepted M WCSP (in review)
Opuntia inamoena K.Schum. Synonym L WCSP (in review)
Opuntia inaperta (Schott ex Griffiths) D.R. Hunt Accepted M TRO
Opuntia incarnadilla Griffiths Synonym M TRO
Opuntia inermis (DC.) DC. Synonym L TRO
Opuntia infesta (F. Ritter) Iliff Accepted M TRO
Opuntia insularis Stewart Accepted M TRO
Opuntia intermedia Salm-Dyck Unresolved L WCSP (in review)
Opuntia intermedia A.Gray Unresolved L WCSP (in review)
Opuntia intricata Griffiths Unresolved L WCSP (in review)
Opuntia invicta Brandegee Synonym M TRO
Opuntia involuta Otto ex C.F.Först. Unresolved L WCSP (in review)
Opuntia ipatiana Cárdenas Synonym M TRO
Opuntia irrorata Mart. ex Pfeiff. Unresolved L WCSP (in review)
Opuntia italica Ten. ex Pfeiff. Unresolved L WCSP (in review)
Opuntia ithypetala Griffiths Unresolved L WCSP (in review)
Opuntia jaliscana Bravo Accepted M TRO
Opuntia jamaicensis Britton & Harris Unresolved L WCSP (in review)
Opuntia joconostle F.A.C. Weber Accepted M TRO
Opuntia juniperina Britton & Rose Synonym M TRO
Opuntia jussieui J.N.Haage ex C.F.Först. Unresolved L WCSP (in review)
Opuntia karwinskiana Salm-Dyck Accepted M TRO
Opuntia × kelvinensis V.E.Grant & K.A.Grant Synonym M WCSP (in review)
Opuntia keyensis Britton ex Small Accepted M TRO
Opuntia kiskaloro Speg. Synonym M TRO
Opuntia kleiniae DC. Synonym M WCSP (in review)
Opuntia kleiniae var. tetracantha (Toumey (pro sp.)) W. T. Marshall Synonym L TRO
Opuntia kuehnrichiana Werderm. & Backeb. Accepted M TRO
Opuntia kuehnrichii Backeb. Unresolved L WCSP (in review)
Opuntia kuntzei (K.Schum.) Kiessling Unresolved L WCSP (in review)
Opuntia kunzei Rose Synonym M TRO
Opuntia kunzei var. wrightiana (E.M. Baxter) Peebles Synonym L TRO
Opuntia labouretiana K.Schum. Unresolved L WCSP (in review)
Opuntia laetevirens Backeb. Unresolved L WCSP (in review)
Opuntia laevis J.M. Coult. Synonym M TRO
Opuntia lagopus K. Schum. Accepted M TRO
Opuntia lagopus var. aurea (Rauh & Backeb.) G.D. Rowley Synonym L TRO
Opuntia lagopus var. aureo-penicillata (Rauh & Backeb.) G.D. Rowley Synonym L TRO
Opuntia lagopus var. leucolagopus (Rauh & Backeb.) G.D. Rowley Synonym L TRO
Opuntia lagopus var. pachyclada (Rauh & Backeb.) G.D. Rowley Synonym L TRO
Opuntia lagunae Baxter ex Bravo Accepted M TRO
Opuntia laiglonii Frič Unresolved L WCSP (in review)
Opuntia lanceolata (Haw.) Haw. Synonym M WCSP (in review)
Opuntia lanigera Salm-Dyck Unresolved L WCSP (in review)
Opuntia lanigera Parm. ex Pfeiff. Unresolved L WCSP (in review)
Opuntia larreyi F.A.C. Weber ex Coult. Synonym M TRO
Opuntia lasiacantha Pfeiff. Accepted M TRO
Opuntia lata Small Accepted M TRO
Opuntia laxiflora Griffiths Unresolved L WCSP (in review)
Opuntia ledienii A.Berger Unresolved L WCSP (in review)
Opuntia lemaireana Console ex Bois Unresolved L WCSP (in review)
Opuntia leoncito Werderm. Synonym M TRO
Opuntia leonina F.Haage & M.Schmidt ex C.F.Först. & Rümpler Unresolved L WCSP (in review)
Opuntia leptarthra F.A.C.Weber Unresolved L WCSP (in review)
Opuntia leptocarpa Mackensen Unresolved L WCSP (in review)
Opuntia leptocaulis DC. Synonym M WCSP (in review)
Opuntia leptocaulis var. badia A. Berger Synonym L TRO
Opuntia leptocaulis var. brevispina (Engelm.) S. Watson Synonym L TRO
Opuntia leptocaulis var. brittonii (González Ortega, Jesús) Bravo Synonym L TRO
Opuntia leptocaulis var. longispina (Engelm.) A. Berger Synonym L TRO
Opuntia leptocaulis var. pleuriseta A. Berger Synonym L TRO
Opuntia leptocaulis var. robustior A. Berger Synonym L TRO
Opuntia leptocaulis var. vaginata (Engelm.) S. Watson Synonym L TRO
Opuntia leucacantha Salm-Dyck Unresolved L WCSP (in review)
Opuntia leucantha Link & Otto ex Pfeiff. Unresolved L WCSP (in review)
Opuntia leucophaea Phil. Synonym M TRO
Opuntia leucostata J.Forbes Unresolved L WCSP (in review)
Opuntia leucosticta H.L.Wendl. ex Pfeiff. Unresolved L WCSP (in review)
Opuntia leucotricha DC. Accepted M TRO
Opuntia lilae Trujillo & Marisela Ponce Accepted M WCSP (in review)
Opuntia limitata (F. Ritter) P.J. Braun & Esteves Accepted M TRO
Opuntia lindheimeri Engelm. Synonym M TRO
Opuntia lindheimeri var. aciculata (Griffiths) Bravo Synonym L WCSP (in review)
Opuntia lindheimeri var. chisosensis M.S. Anthony Synonym L TRO
Opuntia lindheimeri var. cuija (Griffiths & Hare) L.D. Benson Synonym L TRO
Opuntia lindheimeri var. cyclodes (Engelm. & J.M. Bigelow) J.M. Coult. Synonym L TRO
Opuntia lindheimeri var. dulcis (Engelm.) J.M. Coult. Synonym L TRO
Opuntia lindheimeri var. ellisiana (Griffiths) K. Hammer Synonym L TRO
Opuntia lindheimeri var. lehmannii L.D. Benson Synonym L TRO
Opuntia lindheimeri var. linguiformis (Griffiths) L.D.Benson Synonym L WCSP (in review)
Opuntia lindheimeri var. littoralis (Engelm.) J.M. Coult. Synonym L TRO
Opuntia lindheimeri var. subarmata (Griffiths) Elizondo & Wehbe Synonym L TRO
Opuntia lindheimeri var. tricolor (Griffiths) L.D. Benson Synonym L TRO
Opuntia lindsayi Rebman Synonym M WCSP (in review)
Opuntia linguiformis Griffiths Synonym M WCSP (in review)
Opuntia littoralis (Engelm.) Cockerell Accepted M TRO
Opuntia littoralis var. austrocalifornica L.D. Benson & Walk. Synonym L TRO
Opuntia littoralis var. littoralis Synonym L TRO
Opuntia littoralis var. piercei (Fosberg) L.D. Benson & Walk. Accepted L TRO
Opuntia littoralis var. vaseyi (J.M. Coult.) L.D. Benson & Walk. Synonym L TRO
Opuntia llanos-de-huanta D.R.Hunt Unresolved L WCSP (in review)
Opuntia lloydii Rose Synonym M TRO
Opuntia longiareolata Clover & Jotter Synonym M TRO
Opuntia longiclada Griffiths Unresolved L WCSP (in review)
Opuntia longiglochia C.Z.Nelson Unresolved L WCSP (in review)
Opuntia longispina Pfeiff. Unresolved L WCSP (in review)
Opuntia longispina Haw. Unresolved L WCSP (in review)
Opuntia loomsii Peebles Unresolved L TRO
Opuntia lubrica Griffiths Synonym M TRO
Opuntia lucayana Britton Unresolved L WCSP (in review)
Opuntia × lucayana Britton (pro sp.) Unresolved L TRO
Opuntia lucens Griffiths Synonym M TRO
Opuntia lucida auct. Unresolved L WCSP (in review)
Opuntia lutea (Rose) D.R.Hunt Synonym M WCSP (in review)
Opuntia macateei Britton & Rose Unresolved L WCSP (in review)
Opuntia macbridei Britton & Rose Synonym M TRO
Opuntia macbridei var. orbicularis Rauh & Backeb. Synonym L TRO
Opuntia macdougaliana Rose Synonym M TRO
Opuntia macdougliana A. Rose Unresolved L TRO
Opuntia mackensenii Rose Synonym M TRO
Opuntia macracantha Gibbes Accepted M TRO
Opuntia macrantha Gibbes Unresolved L WCSP (in review)
Opuntia macrocalyx Griffiths Synonym M TRO
Opuntia macrocentra Engelm. Accepted M TRO
Opuntia macrocentra var. aureispina S. Brack & K.D. Heil Synonym L TRO
Opuntia macrocentra var. martiniana L.D. Benson Synonym L TRO
Opuntia macrocentra var. minor M.S. Anthony Synonym L TRO
Opuntia macrorhiza Engelm. Accepted M TRO
Opuntia macrorhiza subsp. macrorhiza Synonym L TRO
Opuntia macrorhiza var. macrorhiza Synonym L TRO
Opuntia macrorhiza subsp. potosina (Hern.-Valencia) U. Guzmán & Mandujano Accepted L TRO
Opuntia macrorhiza var. potosina Hern.-Valencia Synonym L TRO
Opuntia macrorhiza subsp. pottsii (Salm-Dyck) U. Guzmán & Mandujano Accepted L TRO
Opuntia macrorhiza var. pottsii (Salm-Dyck) L.D. Benson Synonym L TRO
Opuntia maculacantha C.F.Först. Unresolved L WCSP (in review)
Opuntia maelenii Salm-Dyck Unresolved L WCSP (in review)
Opuntia magenta Griffiths Unresolved L WCSP (in review)
Opuntia magna Griffiths Unresolved L WCSP (in review)
Opuntia magnarenensis Griffiths Unresolved L WCSP (in review)
Opuntia magnifica Small Accepted M TRO
Opuntia magnifolia Noronha Unresolved L WCSP (in review)
Opuntia maidenii Griffiths Unresolved L WCSP (in review)
Opuntia maihuen Gay Synonym M TRO
Opuntia maldonadensis Arechav. Synonym L TRO
Opuntia mamillata Schott ex Engelm. Synonym M TRO
Opuntia mandragora (Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia marenae W.E. Parsons Synonym M TRO
Opuntia margaritana (J.M. Coult.) Baxter Synonym M TRO
Opuntia maritima Raf. Unresolved L WCSP (in review)
Opuntia marnieriana Backeb. Accepted M TRO
Opuntia martiniana (L.D. Benson) B.D. Parfitt Accepted M TRO
Opuntia matudae Scheinvar Unresolved L WCSP (in review)
Opuntia maxima Mill. Accepted M WCSP (in review)
Opuntia maxonii González Ortega, Jesús Synonym M TRO
Opuntia media Haw. Unresolved L WCSP (in review)
Opuntia megacantha Salm-Dyck Synonym M WCSP (in review)
Opuntia megacarpa Griffiths Synonym M TRO
Opuntia megalantha Griffiths Synonym M WCSP (in review)
Opuntia megalarthra Rose Unresolved L WCSP (in review)
Opuntia megapotamica Arechav. Accepted M TRO
Opuntia megarhiza Rose Accepted M TRO
Opuntia megarhiza subsp. megarhiza Synonym L TRO
Opuntia megarhiza subsp. pachyrrhiza (H.M. Hern., Gomez-Hin. & Barcenas) U. Guzmán & Mandujano Accepted L TRO
Opuntia megasperma Howell Accepted M TRO
Opuntia megasperma var. megasperma Synonym L TRO
Opuntia megliolii (R.Kiesling) Kiessling Unresolved L WCSP (in review)
Opuntia melanosperma Svenson Synonym M TRO
Opuntia mesacantha Raf. Synonym M TRO
Opuntia mesacantha var. cymochila (Engelm. & J.M. Bigelow) J.M. Coult. Synonym L TRO
Opuntia mesacantha var. macrorhiza (Engelm.) J.M. Coult. Synonym L TRO
Opuntia mesacantha var. microsperma (Engelm. & J.M. Bigelow) J.M. Coult. Unresolved L TRO
Opuntia mesacantha var. oplocarpa J.M. Coult. Synonym L TRO
Opuntia mesacantha var. stenochila (Engelm. & J.M. Bigelow) J.M. Coult. Synonym L TRO
Opuntia mesacantha var. vaseyi J.M. Coult. Synonym L TRO
Opuntia metternichii Salm-Dyck Unresolved L WCSP (in review)
Opuntia metuenda Pittier Unresolved L WCSP (in review)
Opuntia mexicana Pfeiff. Unresolved L WCSP (in review)
Opuntia micrarthra Griffiths Unresolved L WCSP (in review)
Opuntia microcarpa K. Schum. Synonym L TRO
Opuntia microdasys (Lehm.) Pfeiff. Accepted M WCSP (in review)
Opuntia microdasys var. albispina Fobe Synonym L TRO
Opuntia microdasys var. laevior Salm-Dyck Synonym L TRO
Opuntia microdasys subsp. microdasys Synonym L TRO
Opuntia microdasys var. minor Salm-Dyck Synonym L TRO
Opuntia microdasys var. pallida Borg Synonym L TRO
Opuntia microdasys var. rufida (Engelm.) K. Schum. Synonym L TRO
Opuntia microdasys subsp. rufida (Engelm.) U. Guzmán & Mandujano Accepted L TRO
Opuntia microdisca F.A.C. Weber Accepted M TRO
Opuntia microthele Pfeiff. Unresolved L WCSP (in review)
Opuntia mieckleyi K.Schum. Unresolved L WCSP (in review)
Opuntia militaris Britton & Rose Synonym L TRO
Opuntia millspaughii Britton Synonym M WCSP (in review)
Opuntia mininuta (Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia minor Müll. Hal. Unresolved L TRO
Opuntia minuscula (Backeb.) G.D. Rowley Synonym M TRO
Opuntia minuta (Backeb.) A. Cast. Synonym M TRO
Opuntia miquelii Monv. Synonym L TRO
Opuntia mira (Rauh & Backeb.) G.D. Rowley Accepted M TRO
Opuntia missouriensis DC. Synonym M TRO
Opuntia missouriensis var. albispina Engelm. & J.M. Bigelow Synonym L TRO
Opuntia missouriensis var. platycarpa Engelm. Synonym L TRO
Opuntia missouriensis var. rufispina Engelm. & J.M. Bigelow Synonym L TRO
Opuntia missouriensis var. trichophora Engelm. & J.M. Bigelow Synonym L TRO
Opuntia mistiensis (Backeb.) G.D. Rowley Synonym M TRO
Opuntia moelleri A. Berger Synonym M TRO
Opuntia mohavensis Engelm. & J.M.Bigelow Unresolved L WCSP (in review)
Opuntia mojavensis Engelm. & J.M. Bigelow Synonym M TRO
Opuntia molesta Brandegee Synonym M WCSP (in review)
Opuntia molfinoi (Speg.) Werderm. Synonym M TRO
Opuntia molinensis Speg. Synonym M TRO
Opuntia monacantha (Willd.) Haw. Accepted M WCSP (in review)
Opuntia monacantha subsp. brunneogemmia (F. Ritter) P.J. Braun & Esteves Accepted L TRO
Opuntia moniliformis (L.) Haw. ex Steud. Synonym L WCSP (in review)
Opuntia moniliformis f. guantanamana (Areces) Govaerts Synonym L WCSP (in review)
Opuntia montana Sencke ex Haage Unresolved L WCSP (in review)
Opuntia montevideensis Speg. Unresolved L WCSP (in review)
Opuntia monticola Phil. Unresolved L WCSP (in review)
Opuntia morenoi K.Schum. Unresolved L WCSP (in review)
Opuntia mortolensis Britton & Rose Synonym M WCSP (in review)
Opuntia mucheri Starm. Unresolved L WCSP (in review)
Opuntia muelleriana (Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia multiareolata Backeb. Unresolved L WCSP (in review)
Opuntia multigeniculata Clokey Synonym M TRO
Opuntia munzii C.B.Wolf Synonym M WCSP (in review)
Opuntia myriacantha F.A.C.Weber Unresolved L WCSP (in review)
Opuntia myriacantha Link & Otto ex Steud. Unresolved L WCSP (in review)
Opuntia nana Vis. Synonym M TRO
Opuntia nashii Britton Synonym M WCSP (in review)
Opuntia nashii subsp. gibarensis (Areces) Govaerts Synonym L TRO
Opuntia nejapensis Bravo Accepted M TRO
Opuntia nelsonii Rose Synonym M TRO
Opuntia nemoralis Griffiths Unresolved L WCSP (in review)
Opuntia × neoarbuscula Griffiths Synonym M WCSP (in review)
Opuntia neoargentina (Backeb.) G.D. Rowley Synonym M TRO
Opuntia neochrysacantha Bravo Accepted M TRO
Opuntia neorutila Y.Itô Unresolved L WCSP (in review)
Opuntia neuquensis Borg Synonym M TRO
Opuntia nicholii L.D. Benson Synonym M TRO
Opuntia nigricans (Haw.) Haw. Synonym M TRO
Opuntia nigrispina K. Schum. Synonym M TRO
Opuntia nigrita Griffiths Synonym M TRO
Opuntia nitens Small Accepted M TRO
Opuntia noodtiae (Backeb. & H. Jacobsen) G.D. Rowley Accepted M TRO
Opuntia nopalilla Karw. ex Salm-Dyck Unresolved L WCSP (in review)
Opuntia nuda (Backeb.) G.D. Rowley Accepted M TRO
Opuntia obliqua Backeb. Unresolved L WCSP (in review)
Opuntia oblongata H. Wendl. Synonym M TRO
Opuntia obovata Griffiths Unresolved L WCSP (in review)
Opuntia occidentalis Engelm. & J.M.Bigelow Unresolved L WCSP (in review)
Opuntia × occidentalis Engelm. & J. M. Bigelow (pro sp.) Accepted M TRO
Opuntia occidentalis var. covillei (Britton & Rose) Parish Accepted L TRO
Opuntia occidentalis var. littoralis (Engelm.) Parish ex Jeps. Synonym L TRO
Opuntia occidentalis var. megacarpa (Griffiths) Munz Accepted L TRO
Opuntia occidentalis var. occidentalis Synonym L TRO
Opuntia ochrocentra Small ex Britton & Rose Synonym M TRO
Opuntia oligacantha Pfeiff. Unresolved L WCSP (in review)
Opuntia olmeca Pérez Crisanto, J.Reyes & F.Brachet Unresolved L WCSP (in review)
Opuntia oplocarpa Engelm. ex J.M. Coult. Unresolved L TRO
Opuntia opuntia Coult. Unresolved L WCSP (in review)
Opuntia opuntia H.Karst. Unresolved L WCSP (in review)
Opuntia orbiculata Salm-Dyck ex Pfeiff. Accepted M TRO
Opuntia oricola Philbrick Accepted M TRO
Opuntia orurensis Cárdenas Synonym M TRO
Opuntia ottonis G.Don Unresolved L WCSP (in review)
Opuntia ovallei Gay Synonym M TRO
Opuntia ovata Pfeiff. Synonym M TRO
Opuntia ovoides Lem. Unresolved L WCSP (in review)
Opuntia pachona Griffiths Synonym M TRO
Opuntia pachypus K. Schum. Accepted M TRO
Opuntia pachyrrhiza H.M. Hern., Gomez-Hin. & Barcenas Synonym M TRO
Opuntia paediophila A. Cast. Synonym M TRO
Opuntia pailana Weing. Accepted M TRO
Opuntia pallida Rose Synonym M TRO
Opuntia palmadora Britton & Rose Synonym M WCSP (in review)
Opuntia palmadora subsp. catingicola (Werderm.) P.J. Braun & Esteves Unresolved L TRO
Opuntia palmeri Engelm. ex J.M. Coult. Synonym M TRO
Opuntia pampeana Speg. Synonym M TRO
Opuntia panellana (Backeb.) Backeb. Synonym L WCSP (in review)
Opuntia papyracantha Phil. Unresolved L WCSP (in review)
Opuntia papyracantha K.Schum. Unresolved L WCSP (in review)
Opuntia paraguayensis K. Schum. Accepted M TRO
Opuntia parishii Orcutt Synonym M TRO
Opuntia parkeri J.M. Coult. Synonym M TRO
Opuntia parmentieri Pfeiff. Unresolved L WCSP (in review)
Opuntia parryi Engelm. Synonym M TRO
Opuntia parryi var. serpentina (Engelm.) L.D. Benson Synonym L TRO
Opuntia parva A.Berger Unresolved L WCSP (in review)
Opuntia parviclada S. Arias & Gama Accepted M TRO
Opuntia parvispina Salm-Dyck Unresolved L WCSP (in review)
Opuntia parvula Salm-Dyck Unresolved L WCSP (in review)
Opuntia pascoensis Britton & Rose Synonym M TRO
Opuntia patagonica Phil. Synonym M WCSP (in review)
Opuntia peckii J.A.Purpus [Unplaced] Unresolved L WCSP (in review)
Opuntia pelaguensis Salm-Dyck Unresolved L WCSP (in review)
Opuntia penicilligera Speg. Accepted M TRO
Opuntia pennellii Britton & Rose Unresolved L WCSP (in review)
Opuntia pentlandii Salm-Dyck Synonym M TRO
Opuntia perrita Griffiths Synonym M TRO
Opuntia pes-corvi Leconte ex Chapm. Unresolved L WCSP (in review)
Opuntia pescorvae Le Conte ex Chapman Unresolved L TRO
Opuntia pestifer Britton & Rose Synonym M TRO
Opuntia phaeacantha Engelm. Accepted M TRO
Opuntia phaeacantha var. brunnea Engelm. Synonym L TRO
Opuntia phaeacantha subsp. camanchica (Engelm. & J.M. Bigelow) Borg Synonym L TRO
Opuntia phaeacantha var. camanchica (Engelm. & J.M. Bigelow) L.D. Benson Accepted L TRO
Opuntia phaeacantha var. chihuahuensis (Rose) Bravo Synonym L TRO
Opuntia phaeacantha var. discata (Griffiths) L.D. Benson & Walk. Synonym L TRO
Opuntia phaeacantha var. flavispina L.D. Benson Synonym L TRO
Opuntia phaeacantha var. laevis (J.M. Coult.) L.D. Benson Synonym L TRO
Opuntia phaeacantha var. major Engelm. Synonym L TRO
Opuntia phaeacantha var. nigricans Engelm. Synonym L TRO
Opuntia phaeacantha var. phaeacantha Synonym L TRO
Opuntia phaeacantha var. piercei Fosberg Synonym L TRO
Opuntia phaeacantha var. spinosibacca (M.S. Anthony) L.D. Benson Synonym L TRO
Opuntia phaeacantha var. wootonii (Griffiths) L.D. Benson Accepted L TRO
Opuntia philippii F.Haage & M.Schmidt ex Bois Unresolved L WCSP (in review)
Opuntia phyllacantha Salm-Dyck ex C.F.Först. Unresolved L WCSP (in review)
Opuntia phyllanthus (L.) Mill. Synonym M TRO
Opuntia picardae Urb. Unresolved L WCSP (in review)
Opuntia picardoi Marn.-Lap. Unresolved L WCSP (in review)
Opuntia piccolomini auct. Unresolved L WCSP (in review)
Opuntia pilifera F.A.C. Weber Accepted M TRO
Opuntia pinkavae B.D. Parfitt Accepted M TRO
Opuntia pintadera Salm-Dyck Unresolved L WCSP (in review)
Opuntia pisciformis Small Accepted M TRO
Opuntia pititache (Karw. ex Pfeiff.) F.A.C. Weber Synonym M TRO
Opuntia pittieri Britton & Rose Unresolved L WCSP (in review)
Opuntia pituitosa (F. Ritter) Iliff Accepted M TRO
Opuntia platyacantha Salm-Dyck Synonym M TRO
Opuntia platynoda Griffiths Unresolved L WCSP (in review)
Opuntia plumbea Rose Accepted M TRO
Opuntia poecilacantha Backeb. Synonym M TRO
Opuntia poeppigii Otto ex Pfeiff. Synonym M WCSP (in review)
Opuntia pollardii Britton & Rose Accepted M TRO
Opuntia polyacantha Haw. Accepted M TRO
Opuntia polyacantha var. albispina (Engelm. & J.M. Bigelow) J.M. Coult. Accepted L TRO
Opuntia polyacantha var. arenaria (Engelm.) B.D. Parfitt Synonym L TRO
Opuntia polyacantha var. erinacea (Engelm. & J.M. Bigelow) B.D. Parfitt Synonym L TRO
Opuntia polyacantha var. hystericina (Engelm. & J.M. Bigelow) B.D. Parfitt Accepted L TRO
Opuntia polyacantha var. juniperina (Britton & Rose) L.D. Benson Synonym L TRO
Opuntia polyacantha var. nicholii (L.D. Benson) B.D. Parfitt Accepted L TRO
Opuntia polyacantha var. platycarpa (Engelm.) J.M. Coult. Accepted L TRO
Opuntia polyacantha var. polyacantha Synonym L TRO
Opuntia polyacantha var. rufispina (Engelm. & J.M. Bigelow) L.D. Benson Synonym L TRO
Opuntia polyacantha var. schweriniana (K. Schum.) Backeb. Accepted L TRO
Opuntia polyacantha var. trichophora (Engelm. & J.M. Bigelow) J.M. Coult. Synonym L TRO
Opuntia polyantha Haw. Unresolved L WCSP (in review)
Opuntia polycarpa Small Accepted M TRO
Opuntia polymorpha Pfeiff. Unresolved L WCSP (in review)
Opuntia porteri Brandegee ex F.A.C.Weber Synonym M WCSP (in review)
Opuntia posnanskyana Cárdenas Synonym M TRO
Opuntia pottsii Salm-Dyck Synonym M TRO
Opuntia praecox J.Forbes Unresolved L WCSP (in review)
Opuntia prasina Speg. Unresolved L WCSP (in review)
Opuntia prate Sabine ex Pfeiff. Unresolved L WCSP (in review)
Opuntia procumbens Engelm. & J.M. Bigelow Synonym M TRO
Opuntia prolifera Engelm. Synonym M WCSP (in review)
Opuntia prostrata Monv. & Lem. ex C.F.Först. Unresolved L WCSP (in review)
Opuntia protracta Lem. ex C.F.Först. Unresolved L WCSP (in review)
Opuntia pruinosa Salm-Dyck Unresolved L WCSP (in review)
Opuntia pseudo-tuna Salm-Dyck Unresolved L TRO
Opuntia pseudo-udonis (Rauh & Backeb.) G.D. Rowley Accepted M TRO
Opuntia puberula Pfeiff. Synonym M TRO
Opuntia pubescens H.L.Wendl. ex Pfeiff. Accepted M WCSP (in review)
Opuntia puelchana A. Cast. Synonym M TRO
Opuntia pulchella Engelm. Synonym L TRO
Opuntia pulverulenta Pfeiff. Accepted M TRO
Opuntia pulvinata DC. Unresolved L WCSP (in review)
Opuntia pumila Rose Accepted M TRO
Opuntia punta-caillan (Rauh & Backeb.) G.D. Rowley Synonym M TRO
Opuntia purpurea R.E. Fr. Synonym M TRO
Opuntia pusilla (Haw.) Haw. Synonym M TRO
Opuntia pycnantha Engelm. Accepted M TRO
Opuntia pycnantha var. margaritana J.M. Coult. Synonym L TRO
Opuntia pygmaea (Wiegand & Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia pyriformis Rose Accepted M TRO
Opuntia pyrocarpa Griffiths Unresolved L WCSP (in review)
Opuntia pyrrhacantha K. Schum. Accepted M TRO
Opuntia pyrrhantha (F. Ritter) P.J. Braun & Esteves Synonym M TRO
Opuntia quimilo K. Schum. Accepted M TRO
Opuntia × quipa F.A.C. Weber (pro sp.) Unresolved L TRO
Opuntia quitensis F.A.C. Weber Accepted M TRO
Opuntia rafinesquei Engelm. Synonym M TRO
Opuntia rafinesquei f. arkansana (Engelm. ex Rumpler) Schelle Unresolved L TRO
Opuntia rafinesquei var. arkansana Engelm. ex Rumpler Synonym L TRO
Opuntia rafinesquei f. cymochila (Engelm. & J.M. Bigelow) Schelle Synonym L TRO
Opuntia rafinesquei var. microsperma Engelm. & J.M. Bigelow Synonym L TRO
Opuntia rafinesquei var. minor Engelm. Synonym L TRO
Opuntia rafinesquei f. oplocarpa (J.M. Coult.) Schelle Unresolved L TRO
Opuntia rafinesquei var. vaseyi (J.M. Coult.) K. Schum. Synonym L TRO
Opuntia rahmeri Phil. Unresolved L WCSP (in review)
Opuntia ramosissima Engelm. Synonym M WCSP (in review)
Opuntia ramulifera Salm-Dyck Synonym M TRO
Opuntia rarissima (Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia rastrera F.A.C. Weber Accepted M TRO
Opuntia rauhii (Backeb.) G.D. Rowley Accepted M TRO
Opuntia rauppiana K. Schum. Accepted M TRO
Opuntia recondita Griffiths Synonym M TRO
Opuntia recurvospina Griffiths Unresolved L WCSP (in review)
Opuntia reflexa Mackensen Unresolved L WCSP (in review)
Opuntia reflexispina Wiggins & Rollins Synonym M TRO
Opuntia reicheana Espinosa Unresolved L WCSP (in review)
Opuntia repens Karw. ex Salm-Dyck Unresolved L WCSP (in review)
Opuntia repens Bello Unresolved L WCSP (in review)
Opuntia reptans Karw. ex W.H.Baxter Unresolved L WCSP (in review)
Opuntia retrorsa Speg. Synonym M TRO
Opuntia retrospinosa Lem. Unresolved L WCSP (in review)
Opuntia rhodantha K. Schum. Synonym M TRO
Opuntia rhodantha var. xanthostemma (K. Schum.) Rehder Synonym L TRO
Opuntia rileyi González Ortega, Jesús Accepted M TRO
Opuntia riojana Hosseus Unresolved L TRO
Opuntia riparia Griffiths Unresolved L WCSP (in review)
Opuntia ritteri A. Berger Accepted M TRO
Opuntia riviereana Backeb. Accepted M TRO
Opuntia robinsonii González Ortega, Jesús Accepted M TRO
Opuntia roborensis Cárdenas Synonym M TRO
Opuntia robusta J.C. Wendl. Accepted M TRO
Opuntia robusta var. guerrana (Griffiths) Sánchez-Mej. Synonym L TRO
Opuntia robusta var. larreyi (F.A.C. Weber ex Coult.) Bravo Synonym L TRO
Opuntia × rooneyi M.P.Griff. Unresolved L WCSP (in review)
Opuntia rosarica G.E. Linds. Synonym M TRO
Opuntia rosea DC. Synonym M WCSP (in review)
Opuntia roseana Mackensen Unresolved L WCSP (in review)
Opuntia rosiflora K.Schum. Unresolved L WCSP (in review)
Opuntia rossiana (Heinrich & Backeb.) D.R. Hunt Synonym M TRO
Opuntia rotundifolia Brandegee Synonym M TRO
Opuntia roxburghiana Voigt Unresolved L WCSP (in review)
Opuntia rubescens Salm-Dyck ex DC. Synonym M WCSP (in review)
Opuntia rubiflora Davidson Unresolved L WCSP (in review)
Opuntia rubiflora Griffiths Unresolved L WCSP (in review)
Opuntia rubrifolia Engelm. ex J.M.Coult. Unresolved L WCSP (in review)
Opuntia rufescens Salm-Dyck ex C.F.Först. Unresolved L WCSP (in review)
Opuntia rufida Engelm. Synonym M TRO
Opuntia rufida var. tortiflora M.S. Anthony Synonym L TRO
Opuntia rugosa Griffiths Unresolved L WCSP (in review)
Opuntia ruiz-lealii A. Cast. Synonym M TRO
Opuntia russellii Britton & Rose Synonym M TRO
Opuntia ruthei A.Berger Unresolved L WCSP (in review)
Opuntia rutila Nutt. Unresolved L WCSP (in review)
Opuntia rzedowskii Scheinvar Synonym M TRO
Opuntia sabinii Pfeiff. Unresolved L WCSP (in review)
Opuntia salagria A. Cast. Synonym M TRO
Opuntia salicornoides Spreng. ex Pfeiff. Unresolved L WCSP (in review)
Opuntia salmiana Parm. ex Pfeiff. Accepted M TRO
Opuntia salmii J.Forbes Unresolved L WCSP (in review)
Opuntia salvadorensis Britton & Rose Unresolved L WCSP (in review)
Opuntia sanctae-barbarae D.R.Hunt Unresolved L WCSP (in review)
Opuntia sanfelipensis Rebman Synonym M WCSP (in review)
Opuntia sanguinea Proctor Unresolved L WCSP (in review)
Opuntia sanguinocula Griffiths Unresolved L WCSP (in review)
Opuntia santamaria (E.M.Baxter) Wiggins Synonym M WCSP (in review)
Opuntia santamaria (Baxter) Bravo Synonym M TRO
Opuntia santarita (Griffiths & Hare) Rose Accepted M TRO
Opuntia sarca Griffiths ex Scheinvar Unresolved L WCSP (in review)
Opuntia saxatilis (F. Ritter) P.J. Braun & Esteves Accepted M TRO
Opuntia saxicola Howell Accepted M TRO
Opuntia scheeri F.A.C. Weber Accepted M TRO
Opuntia schickendantzii F.A.C. Weber Accepted M TRO
Opuntia schomburgkii Salm-Dyck Unresolved L WCSP (in review)
Opuntia schottii Engelm. Synonym M TRO
Opuntia schottii var. grahamii (Engelm.) L.D. Benson Synonym L TRO
Opuntia schulzii A. Cast. & Lelong Synonym M TRO
Opuntia schumannii F.A.C.Weber ex A.Berger Accepted M WCSP (in review)
Opuntia schumannii Speg. Synonym M TRO
Opuntia schweriniana K. Schum. Synonym M TRO
Opuntia securigera Borg Unresolved L WCSP (in review)
Opuntia segethii F. Phil. Synonym M TRO
Opuntia seguina C.Z.Nelson Unresolved L WCSP (in review)
Opuntia semispinosa Griffiths Synonym M TRO
Opuntia senilis Roezl Unresolved L WCSP (in review)
Opuntia senilis Parm. ex Pfeiff. Unresolved L WCSP (in review)
Opuntia sericea G.Don ex Salm-Dyck Unresolved L WCSP (in review)
Opuntia serpentina Engelm. Synonym L TRO
Opuntia setigera (Backeb.) W.T.Marshall Unresolved L WCSP (in review)
Opuntia setispina Engelm. ex Salm-Dyck, L. Synonym M TRO
Opuntia shaferi Britton & Rose Synonym M TRO
Opuntia shreveana C.Z. Nelson Synonym M TRO
Opuntia silvestris Backeb. Unresolved L WCSP (in review)
Opuntia sinclairii Griffiths Unresolved L WCSP (in review)
Opuntia skottsbergii Britton & Rose Synonym M TRO
Opuntia soederstromiana Britton & Rose Accepted M TRO
Opuntia soehrensii Britton & Rose Synonym M TRO
Opuntia spathulata (Otto ex Pfeiff.) F.A.C. Weber Synonym M TRO
Opuntia speciosa Steud. Unresolved L WCSP (in review)
Opuntia spectatissima (Daston) G.D.Rowley Unresolved L WCSP (in review)
Opuntia spegazzinii F.A.C. Weber Synonym M TRO
Opuntia sphaerica Foerster Synonym M TRO
Opuntia sphaerica var. rauppiana (K. Schum.) G.D. Rowley Synonym L TRO
Opuntia sphaerica var. unguispina (Backeb.) G.D. Rowley Synonym L TRO
Opuntia sphaerocarpa Engelm. & J.M.Bigelow Unresolved L WCSP (in review)
Opuntia sphaerocarpa var. utahensis Engelm. Synonym L TRO
Opuntia spinalba Raf. Unresolved L WCSP (in review)
Opuntia spinaurea Karw. ex Salm-Dyck Unresolved L WCSP (in review)
Opuntia spiniflora Phil. Synonym M TRO
Opuntia × spinosibacca M. S. Anthony (pro sp.) Accepted M TRO
Opuntia spinosior (Engelm.) Toumey Synonym M TRO
Opuntia spinosior var. neomexicana Toumey Synonym L TRO
Opuntia spinosissima Mill. Accepted M TRO
Opuntia spinotecta Griffiths Unresolved L WCSP (in review)
Opuntia spinulifera Salm-Dyck Accepted M TRO
Opuntia spinulosa Salm-Dyck Unresolved L WCSP (in review)
Opuntia spirocentra Engelm. & J.M.Bigelow ex Haage Unresolved L WCSP (in review)
Opuntia splendens Pfeiff. Unresolved L WCSP (in review)
Opuntia spraguei González Ortega, Jesús Accepted M TRO
Opuntia squarrosa Griffiths Unresolved L WCSP (in review)
Opuntia staffordae Bullock Accepted M TRO
Opuntia stanleyi Engelm. Unresolved L WCSP (in review)
Opuntia stanlyi Engelm. ex B.D. Jacks. Synonym M TRO
Opuntia stanlyi var. kunzei (Rose) L.D. Benson Synonym L TRO
Opuntia stanlyi var. parishii (Orcutt) L.D. Benson Synonym L TRO
Opuntia stanlyi var. peeblesiana L.D. Benson Synonym L TRO
Opuntia stanlyi var. wrightiana (E.M. Baxter) L.D. Benson Synonym L TRO
Opuntia stapeliae DC. Unresolved L WCSP (in review)
Opuntia steiniana (Backeb.) G.D. Rowley Synonym M TRO
Opuntia stellata Salm-Dyck Synonym M TRO
Opuntia stenarthra K.Schum. Unresolved L WCSP (in review)
Opuntia stenochila Engelm. & J.M. Bigelow Synonym M TRO
Opuntia stenopetala Engelm. Accepted M TRO
Opuntia stipata (Coult.) K.Schum. Unresolved L WCSP (in review)
Opuntia straminea Sencke ex Haage Unresolved L WCSP (in review)
Opuntia streptacantha Lem. Accepted M TRO
Opuntia stricta (Haw.) Haw. Accepted L WCSP (in review)
Opuntia stricta var. dillenii (Ker Gawl.) L.D.Benson Synonym L WCSP (in review)
Opuntia stricta var. stricta Synonym L TRO
Opuntia strigii var. flexospina (Griffiths) L.D.Benson Synonym L WCSP (in review)
Opuntia strigil Engelm. Accepted M TRO
Opuntia strobiliformis A.Berger Unresolved L WCSP (in review)
Opuntia subarmata Griffiths Synonym M TRO
Opuntia subferox Schott ex Pfeiff. Unresolved L WCSP (in review)
Opuntia subinermis Backeb. Synonym M TRO
Opuntia subsphaerocarpa Speg. Unresolved L WCSP (in review)
Opuntia subterranea R.E. Fr. Synonym M TRO
Opuntia subulata (Muehlenpf.) Engelm. Synonym M WCSP (in review)
Opuntia sulphurea Gillies ex Salm-Dyck Accepted M TRO
Opuntia sulphurea subsp. brachyacantha (F. Ritter) P.J. Braun & Esteves Accepted L TRO
Opuntia sulphurea var. hildemanii (Frič) Backeb. Unresolved L WCSP (in review)
Opuntia sulphurea subsp. spinibarbis (F. Ritter) P.J. Braun & Esteves Accepted L TRO
Opuntia superbospina Griffiths Synonym M TRO
Opuntia syringacantha Pfeiff. ex C.F.Först. Unresolved L WCSP (in review)
Opuntia tapona Engelm. ex J.M. Coult. Accepted M TRO
Opuntia tarapacana Phil. Synonym M TRO
Opuntia tardospina Griffiths Synonym M TRO
Opuntia tayapayensis Cárdenas Synonym M TRO
Opuntia taylorii Britton & Rose Unresolved L WCSP (in review)
Opuntia tehuacana S. Arias & U. Guzmán Accepted M TRO
Opuntia tehuantepecana (Bravo) Bravo Accepted M TRO
Opuntia tenuiflora Small Accepted M TRO
Opuntia tenuispina Engelm. & J.M. Bigelow Synonym M TRO
Opuntia tephrocactoides (Rauh & Backeb.) G.D. Rowley Synonym M TRO
Opuntia teres F. Cels ex F.A.C. Weber Synonym M TRO
Opuntia tesajo Engelm. Synonym M WCSP (in review)
Opuntia tesselata Engelm. Unresolved L WCSP (in review)
Opuntia tessellata var. cristata K. Schum. Synonym L TRO
Opuntia testudinis-crus F.A.C. Weber Synonym M TRO
Opuntia × tetracantha Toumey Synonym M WCSP (in review)
Opuntia texana Griffiths Synonym M TRO
Opuntia thornberi Thornber & Bonker Synonym M TRO
Opuntia thurberi Engelm. Synonym M WCSP (in review)
Opuntia thurberi var. alamosensis (Britton & Rose) Bravo Synonym L TRO
Opuntia thurberi subsp. versicolor (Engelm. ex J.M. Coult.) Felger Synonym L TRO
Opuntia ticnamarensis (F. Ritter) D.R. Hunt Synonym M TRO
Opuntia tidbaldi J.M. Bigelow Unresolved L TRO
Opuntia tidballii J.M.Bigelow Unresolved L WCSP (in review)
Opuntia tilcarensis Backeb. Unresolved L WCSP (in review)
Opuntia tomentella A.Berger Accepted M WCSP (in review)
Opuntia tomentosa Salm-Dyck Accepted M TRO
Opuntia tomentosa var. hernandezii (DC.) Bravo Synonym L TRO
Opuntia tortispina Engelm. & J.M. Bigelow Synonym M TRO
Opuntia tortispina var. cymochila (Engelm. & J.M. Bigelow) Backeb. Synonym L TRO
Opuntia toumeyi Rose Unresolved L WCSP (in review)
Opuntia tracyi Britton Synonym M TRO
Opuntia treleasei J.M. Coult. Synonym M TRO
Opuntia triacantha (Willd.) Sweet Accepted L TRO
Opuntia tribuloides Griffiths Unresolved L WCSP (in review)
Opuntia trichophora (Engelm. & J.M. Bigelow) Britton & Rose Synonym M TRO
Opuntia trichopora Britton Unresolved L TRO
Opuntia tricolor Griffiths Synonym M TRO
Opuntia tuberculata Haw. Unresolved L WCSP (in review)
Opuntia tuberculosirhopalica (Wiegand & Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia tuberiformis Phil. Unresolved L WCSP (in review)
Opuntia tuberosa Pfeiff. Synonym M TRO
Opuntia tumida (F. Ritter) D.R. Hunt Synonym M TRO
Opuntia tuna (L.) Mill. Accepted M WCSP (in review)
Opuntia tuna-blanca Speg. Unresolved L WCSP (in review)
Opuntia tunicata (Lehm.) Pfeiff. Synonym M WCSP (in review)
Opuntia tunicata var. davisii (Engelm. & J.M. Bigelow) L.D. Benson Synonym L TRO
Opuntia tunoidea Gibbes Accepted M TRO
Opuntia tunoides Britton & Shafer ex Bold. Unresolved L TRO
Opuntia turbinata Small Accepted M TRO
Opuntia turgida Small Accepted M TRO
Opuntia turpinii Lem. Unresolved L WCSP (in review)
Opuntia udonis Weing. Unresolved L WCSP (in review)
Opuntia ula Engelm. x O. kelvinensis Unresolved L TRO
Opuntia umbrella Steud. Unresolved L WCSP (in review)
Opuntia undosa Griffiths Unresolved L WCSP (in review)
Opuntia undulata Griffiths Accepted M TRO
Opuntia unguispina Backeb. Accepted M TRO
Opuntia urbaniana Werderm. Unresolved L WCSP (in review)
Opuntia ursina F.A.C. Weber Synonym M TRO
Opuntia utahensis J.A.Purpus Unresolved L WCSP (in review)
Opuntia utkilio Speg. Synonym M TRO
Opuntia vaginata Engelm. Synonym M TRO
Opuntia valentinii (Speg.) Kiessling Unresolved L WCSP (in review)
Opuntia valida Griffiths Unresolved L WCSP (in review)
Opuntia × vaseyi (J.M. Coult.) Britton & Rose (pro sp.) Accepted M TRO
Opuntia velutina F.A.C. Weber Accepted M TRO
Opuntia velutina var. affinis (Griffiths) Bravo Synonym L TRO
Opuntia velutina var. macdougaliana (Rose) Bravo Synonym L TRO
Opuntia verschaeffeltii var. longispina (Backeb.) G.D. Rowley Synonym L TRO
Opuntia verschaffeltii Cels ex F.A.C.Weber Synonym M WCSP (in review)
Opuntia versicolor Engelm. ex Toumey Synonym M WCSP (in review)
Opuntia versicolor Engelm. ex J.M. Coult. Synonym M TRO
Opuntia verticosa Weing. Unresolved L WCSP (in review)
Opuntia vestita Salm-Dyck Synonym M TRO
Opuntia vexans Griffiths Synonym M TRO
Opuntia vilis Rose Synonym M TRO
Opuntia violacea Engelm. Synonym M TRO
Opuntia violacea Engelm. ex B.D. Jacks. Synonym M TRO
Opuntia violacea var. castetteri L.D. Benson Synonym L TRO
Opuntia violacea var. gosseliniana (F.A.C. Weber) L.D. Benson Synonym L TRO
Opuntia violacea var. macrocentra (Engelm.) L.D. Benson Synonym L TRO
Opuntia violacea var. santarita (Griffiths & Hare) L.D. Benson Synonym L TRO
Opuntia virens Ten. Unresolved L WCSP (in review)
Opuntia virgata Pfeiff. Unresolved L WCSP (in review)
Opuntia virgata C.F.Först. Unresolved L WCSP (in review)
Opuntia × viridiflora Britton & Rose Synonym M WCSP (in review)
Opuntia viridiflora Britton & Rose Synonym M TRO
Opuntia viridirubra (F. Ritter) P.J. Braun & Esteves Accepted M TRO
Opuntia viridirubra subsp. rubrogemmia (F. Ritter) P.J. Braun & Esteves Accepted L TRO
Opuntia vitelliniflora (F. Ritter) P.J. Braun & Esteves Synonym M TRO
Opuntia × vivipara Rose Synonym M WCSP (in review)
Opuntia vulgaris Mill. Synonym M WCSP (in review)
Opuntia vulgaris var. nana (Vis.) K. Schum. Unresolved L TRO
Opuntia vulpina F.A.C. Weber Synonym M TRO
Opuntia wagenknechtii (F. Ritter) D.R. Hunt Synonym M TRO
Opuntia wagneri F.A.C.Weber Unresolved L WCSP (in review)
Opuntia weberi Speg. Unresolved L WCSP (in review)
Opuntia weingartiana Backeb. Synonym M TRO
Opuntia wentiana Britton & Rose Synonym M WCSP (in review)
Opuntia werneri Eggli Unresolved L WCSP (in review)
Opuntia wetmorei Britton & Rose Unresolved L WCSP (in review)
Opuntia whipplei Engelm. & J.M.Bigelow Synonym L WCSP (in review)
Opuntia whipplei var. enodis Peebles Synonym L TRO
Opuntia whipplei var. laevior Engelm. Synonym L TRO
Opuntia whipplei var. multigeniculata (Clokey) L.D. Benson Unresolved L TRO
Opuntia whipplei var. spinosior Engelm. Synonym L WCSP (in review)
Opuntia whipplei var. viridiflora (Britton & Rose) L.D. Benson Unresolved L TRO
Opuntia whitneyana E.M. Baxter Synonym M TRO
Opuntia wiegandii (Backeb.) G.D.Rowley Unresolved L WCSP (in review)
Opuntia wigginsii L.D. Benson Synonym M TRO
Opuntia wilcoxii Britton & Rose Accepted M TRO
Opuntia wilkeana (Backeb.) G.D. Rowley Synonym M TRO
Opuntia winteriana A.Berger Unresolved L WCSP (in review)
Opuntia wolfei (L.D. Benson) M.A. Baker Synonym M TRO
Opuntia woodsii Backeb. Unresolved L WCSP (in review)
Opuntia wootonii Griffiths Synonym M TRO
Opuntia wrightiana (E.M. Baxter) Peebles Synonym M TRO
Opuntia wrightii Engelm. Synonym M TRO
Opuntia xanthoglochia Griffiths Unresolved L WCSP (in review)
Opuntia xanthostemma K. Schum. Synonym M TRO
Opuntia xerocarpa Griffiths Unresolved L WCSP (in review)
Opuntia yanganucensis (Rauh & Backeb.) G.D. Rowley Synonym M TRO
Opuntia youngii C.Z.Nelson Unresolved L WCSP (in review)
Opuntia zacana Howell Synonym M TRO
Opuntia zacuapanensis A.Berger Unresolved L WCSP (in review)
Opuntia zamudioi Scheinvar Accepted M TRO
Opuntia zebrina Small Accepted M TRO
Opuntia zehnderi (Rauh & Backeb.) G.D. Rowley Accepted M TRO
Opuntia zuniensis Griffiths Synonym M TRO