The Plant List — A working list for all plant species

⚠ Version 1 of The Plant List has been superseded.

You should refer instead to the current version of The Plant List.

Results

552 plant name records match your search criteria Alnus. The results are below.

• Genus Alnus is in the family Betulaceae. Species epithets begin with: A B C D E F G H I J K L M N O P Q R S T U V W Y

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

Name	Status	Confi­dence level	Source
Alnus acuminata Kunth	Accepted		WCSP
Alnus acuminata subsp. acuminata	Accepted		WCSP
Alnus acuminata subsp. arguta (Schltdl.) Furlow	Accepted		WCSP
Alnus acuminata var. cuprea Bartlett	Synonym		WCSP
Alnus acuminata var. ferruginea (Kunth) Regel	Synonym		WCSP
Alnus acuminata subsp. glabrata (Fernald) Furlow	Accepted		WCSP
Alnus acuminata var. jorullensis (Kunth) Regel	Synonym		WCSP
Alnus acuminata var. mirbelii (Spach) Regel	Synonym		WCSP
Alnus acuminata var. mirbelii (Spach)	Synonym		TRO
Alnus acuminata var. spachii (Regel) Regel	Synonym		WCSP
Alnus acuminata var. subsericea Bartlett	Synonym		WCSP
Alnus acutissima (H.J.P.Winkl.) Callier	Synonym		WCSP
Alnus alisoviana Mandl	Synonym		WCSP
Alnus alnobetula (Ehrh.) K.Koch	Synonym		WCSP
Alnus alnobetula var. brembana (Rota) H.J.P.Winkl.	Synonym		WCSP
Alnus alnobetula var. crispa (Aiton) H.J.P.Winkl.	Synonym		WCSP
Alnus alnobetula var. fruticosa (Rupr.) H.J.P.Winkl.	Synonym		WCSP
Alnus alnobetula var. parvifolia (Regel) Dippel	Synonym		WCSP
Alnus alnobetula var. repens (Wormsk. ex Hornem.) H.J.P.Winkl.	Synonym		WCSP
Alnus alnobetula var. stenophylla H.J.P.Winkl.	Synonym		WCSP
Alnus alnobetula var. suaveolens (Req.) Regel	Synonym		WCSP
Alnus alnobetula subsp. suaveolens (Req.) Lambinon & Kerguélen	Synonym		WCSP
Alnus alnus (L.) Britton [Invalid]	Synonym		WCSP
Alnus alpina Vill.	Synonym		WCSP
Alnus × ambigua Beck	Synonym		WCSP
Alnus americana (Regel) Czerep.	Synonym		WCSP
Alnus americana K.Koch	Synonym		WCSP
Alnus argentata (Norrl.) Tzvelev	Synonym		WCSP
Alnus argentata var. pinnatipartita (Norrl.) Tzvelev	Synonym		WCSP
Alnus arguta (Schltdl.) Spach	Synonym		WCSP
Alnus arguta var. benthamii Regel	Synonym		WCSP
Alnus arguta var. cuprea Bartlett	Synonym		WCSP
Alnus arguta var. ovata Regel	Synonym		WCSP
Alnus arguta var. punctata Regel	Synonym		WCSP
Alnus arguta var. subsericea Bartlett	Synonym		WCSP
Alnus × aschersoniana Callier [Unplaced]	Unresolved		WCSP
Alnus aurea K.Koch	Synonym		WCSP
Alnus autumnalis Hartig ex Garcke	Synonym		WCSP
Alnus × badensis Láng ex Hagenb.	Synonym		WCSP
Alnus × balatonialis Borbás	Synonym		WCSP
Alnus barbata C.A.Mey.	Synonym		WCSP
Alnus × beckii Callier	Synonym		WCSP
Alnus × beckii var. figertii Callier	Synonym		WCSP
Alnus borealis (Norrl.) C.Regel	Synonym		WCSP
Alnus × borealis Koidz.	Synonym		WCSP
Alnus boshia Buch.-Ham. ex D. Don	Synonym		TRO
Alnus brembana Rota	Synonym		WCSP
Alnus californica (Regel) H.J.P.Winkl.	Synonym		WCSP
Alnus canadensis Lodd. ex Loudon	Synonym		WCSP
Alnus castaneifolia Mirb.	Synonym		WCSP
Alnus cerifera Hartig ex Regel	Synonym		WCSP
Alnus communis Desf. ex Kuntze	Synonym		WCSP
Alnus cordata Desf. [Invalid]	Synonym		WCSP
Alnus cordata (Loisel.) Duby	Accepted		WCSP
Alnus cordata f. parvifolia Callier	Synonym		WCSP
Alnus cordata var. tschmela Sommier & Levier	Synonym		WCSP
Alnus cordifolia Ten.	Synonym		WCSP
Alnus cordifolia var. rotundifolia Regel	Synonym		WCSP
Alnus cordifolia var. subcordata (C.A.Mey.) Regel	Synonym		WCSP
Alnus cordifolia var. villosa Regel	Synonym		WCSP
Alnus corylifolia A.Kern. ex Dalla Torre	Synonym		WCSP
Alnus cremastogyne Burkill	Accepted		WCSP
Alnus crispa (Aiton) Pursh	Synonym		WCSP
Alnus crispa var. elongata Raup	Synonym		WCSP
Alnus crispa var. harricanensis Lepage	Synonym		WCSP
Alnus crispa var. laciniata Hultén	Synonym		WCSP
Alnus crispa subsp. maximowiczii (Callier) Hultén	Synonym		WCSP
Alnus crispa var. mollis (Fernald) Fernald	Synonym		WCSP
Alnus crispa f. parvifolia (Callier) T.Shimizu	Synonym		WCSP
Alnus crispa var. sachalinensis (Koidz.) H.Hara	Synonym		WCSP
Alnus crispa var. sinuata (Regel) Breitung	Synonym		WCSP
Alnus crispa subsp. sinuata (Regel) Hultén	Synonym		WCSP
Alnus crispa f. stragula Fernald	Synonym		WCSP
Alnus crispa var. stragula Fernald	Synonym		TRO
Alnus cuneata Geyer ex Walp.	Unresolved		WCSP
Alnus cylindrostachya (H.J.P.Winkl.) Makino	Synonym		WCSP
Alnus densiflora C.H.Mull.	Synonym		WCSP
Alnus denticulata C.A.Mey.	Synonym		WCSP
Alnus dimitrovii Jordanov & Kitanov [Unplaced]	Unresolved		WCSP
Alnus dioica Roxb.	Synonym		WCSP
Alnus dubia Req. ex Regel [Invalid]	Synonym		WCSP
Alnus × elliptica Req.	Accepted		WCSP
Alnus emarginata Krock.	Synonym		WCSP
Alnus emarginata Shirai	Synonym		WCSP
Alnus × fallacina Callier	Accepted		WCSP
Alnus fauriei H.Lév. & Vaniot	Accepted		WCSP
Alnus februaria Kuntze [Illegitimate]	Synonym		WCSP
Alnus februaria var. incisa (Willd.) Kuntze	Synonym		WCSP
Alnus februaria var. maculata Kuntze	Synonym		WCSP
Alnus februaria var. oxyacanthifolia (Lodd.) Kuntze	Synonym		WCSP
Alnus februaria var. pinnatifida (Spach) Kuntze	Synonym		WCSP
Alnus februaria var. quercifolia (Willd.) Kuntze	Synonym		WCSP
Alnus ferdinandi-coburgii C.K.Schneid.	Accepted		WCSP
Alnus fernandi-coburgii C.K. Schneid.	Unresolved		TRO
Alnus ferruginea Kunth	Synonym		WCSP
Alnus ferruginea var. aliso Griseb.	Synonym		WCSP
Alnus ferruginea var. aliso Lorentz & Hieron.	Synonym		TRO
Alnus ferruginea var. obtusifolia Callier	Synonym		WCSP
Alnus × fiekii Callier	Synonym		WCSP
Alnus × fiekii var. dressleri Callier	Synonym		WCSP
Alnus × figertii Callier [Unplaced]	Unresolved		WCSP
Alnus firma Siebold & Zucc.	Accepted		WCSP
Alnus firma subsp. hirtella (Franch. & Sav.) C.K.Schneid.	Synonym		WCSP
Alnus firma f. hirtella (Franch. & Sav.) H.Ohba	Synonym		WCSP
Alnus firma var. hirtella Franch. & Sav.	Synonym		WCSP
Alnus firma var. multinervis Regel	Synonym		WCSP
Alnus firma var. sieboldiana (Matsum.) H.J.P.Winkl.	Synonym		WCSP
Alnus firma var. yasha (Matsum.) H.J.P.Winkl.	Synonym		WCSP
Alnus firmifolia Fernald	Synonym		WCSP
Alnus formosana (Burkill) Makino	Accepted		WCSP
Alnus frangula L. ex Huth	Unresolved		TRO
Alnus fruticosa Rupr.	Synonym		WCSP
Alnus fruticosa f. arborescens Kozhevn.	Synonym		WCSP
Alnus fruticosa f. barbinervis Nakai	Synonym		WCSP
Alnus fruticosa f. grandifolia Callier	Synonym		WCSP
Alnus fruticosa var. kamtschatica (Callier) Kom.	Synonym		WCSP
Alnus fruticosa subsp. kamtschatica (Regel) Kozhevn.	Synonym		WCSP
Alnus fruticosa f. macrophylla Lange	Synonym		WCSP
Alnus fruticosa var. mandshurica Callier	Synonym		WCSP
Alnus fruticosa var. manschurica Callier ex Kom.	Synonym		WCSP
Alnus fruticosa subsp. montana Printz	Synonym		WCSP
Alnus fruticosa var. pubescens Nakai	Synonym		WCSP
Alnus fruticosa var. rufinervis Nakai	Synonym		WCSP
Alnus fruticosa var. sachalinensis Koidz.	Synonym		WCSP
Alnus fruticosa var. sinuata (Regel) Hultén	Synonym		WCSP
Alnus fruticosa f. vulgaris Callier	Synonym		WCSP
Alnus gigantea Nakai [Unplaced]	Unresolved		WCSP
Alnus glabrata Fernald	Synonym		WCSP
Alnus glabrata subsp. durangensis (Bartlett) A.E.Murray	Synonym		WCSP
Alnus glabrata var. durangensis Bartlett	Synonym		WCSP
Alnus glandulosa Sarg.	Unresolved		TRO
Alnus glauca (Aiton) F.Michx.	Synonym		WCSP
Alnus glauca Michx.	Synonym		TRO
Alnus glutinosa (L.) Gaertn.	Accepted		WCSP
Alnus glutinosa var. acutifolia Spach	Synonym		WCSP
Alnus glutinosa f. aurea Verschaff. ex Dippel	Synonym		WCSP
Alnus glutinosa var. autumnalis Kuntze	Synonym		WCSP
Alnus glutinosa var. barbata (C.A.Mey.) Ledeb.	Synonym		WCSP
Alnus glutinosa subsp. barbata (C.A.Mey.) Yalt.	Accepted		WCSP
Alnus glutinosa subsp. barbata Yaltirik	Synonym		TRO
Alnus glutinosa var. bosniaca Beck	Synonym		WCSP
Alnus glutinosa f. bosniaca (Beck) Callier	Synonym		WCSP
Alnus glutinosa f. cuneata Callier	Synonym		WCSP
Alnus glutinosa var. cylindrostachys H.J.P.Winkl.	Synonym		WCSP
Alnus glutinosa var. denticulata (C.A.Mey.) Ledeb.	Synonym		WCSP
Alnus glutinosa f. dubia Callier	Synonym		WCSP
Alnus glutinosa subsp. elliptica (Req.) Nyman	Synonym		WCSP
Alnus glutinosa var. emarginata Willd.	Synonym		WCSP
Alnus glutinosa f. glabra Brenner	Synonym		WCSP
Alnus glutinosa subsp. glutinosa	Accepted		WCSP
Alnus glutinosa var. imberbis Bornm.	Synonym		WCSP
Alnus glutinosa f. imberbis (Bornm.) Callier	Synonym		WCSP
Alnus glutinosa f. imperialis Dippel	Synonym		WCSP
Alnus glutinosa var. incana (L.) Pers	Synonym		WCSP
Alnus glutinosa f. incisa (Willd.) H.J.P.Winkl.	Synonym		WCSP
Alnus glutinosa var. incisa Willd.	Synonym		WCSP
Alnus glutinosa var. incisa (Willd.) Regel	Accepted		TRO
Alnus glutinosa f. incisa Willd.	Synonym		TRO
Alnus glutinosa var. japonica Matsum.	Synonym		WCSP
Alnus glutinosa f. laciniata (Aiton) H.J.P.Winkl.	Synonym		WCSP
Alnus glutinosa var. laciniata (Aiton) Willd.	Synonym		WCSP
Alnus glutinosa var. laciniata (Willd.) Regel	Accepted		TRO
Alnus glutinosa f. laciniata Willd.	Synonym		TRO
Alnus glutinosa f. lobulata Brenner	Synonym		WCSP
Alnus glutinosa f. longipediculata A.Braun ex H.J.P.Winkl.	Synonym		WCSP
Alnus glutinosa f. macrocarpa Req.	Synonym		WCSP
Alnus glutinosa f. maculata (Kuntze) H.J.P.Winkl.	Synonym		WCSP
Alnus glutinosa f. microcarpa Uechtr. ex Callier	Synonym		WCSP
Alnus glutinosa var. microphylla Callier	Synonym		WCSP
Alnus glutinosa var. oblongata (Aiton) Pers	Synonym		WCSP
Alnus glutinosa var. obtusata (Franch. & Sav.) H.J.P.Winkl.	Synonym		WCSP
Alnus glutinosa var. oxyacanthifolia (Lodd.) Spach	Synonym		WCSP
Alnus glutinosa f. parvifolia Kuntze	Synonym		WCSP
Alnus glutinosa f. pilosa Brenner	Synonym		WCSP
Alnus glutinosa var. pinnatifida Spach	Synonym		WCSP
Alnus glutinosa f. puberula Callier	Synonym		WCSP
Alnus glutinosa var. pubescens (Tausch) Regel	Synonym		WCSP
Alnus glutinosa f. pyramidalis Dippel	Synonym		WCSP
Alnus glutinosa f. quercifolia (Willd.) H.J.P.Winkl.	Synonym		WCSP
Alnus glutinosa var. quercifolia Willd.	Synonym		WCSP
Alnus glutinosa f. quercifolia Willd.	Synonym		TRO
Alnus glutinosa f. rubrinervia Dippel	Synonym		WCSP
Alnus glutinosa var. serrulata (Aiton) Regel	Synonym		WCSP
Alnus glutinosa f. sorbifolia Dippel	Synonym		WCSP
Alnus glutinosa f. subimberbis Bornm. ex Callier	Synonym		WCSP
Alnus glutinosa var. sublobata Zapal.	Synonym		WCSP
Alnus glutinosa f. sublobata (Zapal.) Callier	Synonym		WCSP
Alnus glutinosa f. subpilosa Brenner	Synonym		WCSP
Alnus glutinosa var. subrotunda Spach	Synonym		WCSP
Alnus glutinosa var. subserrata Zapal.	Synonym		WCSP
Alnus glutinosa f. subserrata (Zapal.) Callier	Synonym		WCSP
Alnus glutinosa f. tenuifolia (Callier) Callier	Synonym		WCSP
Alnus glutinosa var. tenuifolia Callier	Synonym		WCSP
Alnus glutinosa var. virescens (S.Watson) Kuntze	Synonym		WCSP
Alnus glutipes (Jarm. ex Czerpek) Vorosch.	Accepted		WCSP
Alnus guatemalensis Gand.	Synonym		WCSP
Alnus hakkodensis Hayashi	Accepted		WCSP
Alnus × hanedae Suyinata	Accepted		WCSP
Alnus harinoki Siebold	Synonym		WCSP
Alnus henedae Sugim. [Unplaced]	Unresolved		WCSP
Alnus henryi C.K.Schneid.	Accepted		WCSP
Alnus hirsuta (Spach) Rupr.	Accepted		WCSP
Alnus hirsuta Turcz.	Unresolved		TRO
Alnus hirsuta var. emarginata (Shirai) Kudô	Synonym		WCSP
Alnus hirsuta f. inokumae (Murai & Kusaka) H.Ohba	Synonym		WCSP
Alnus hirsuta f. macrophylla Callier	Synonym		WCSP
Alnus hirsuta var. microphylla (Nakai) Tatew.	Synonym		WCSP
Alnus hirsuta f. sibirica (Spach) H.Ohba	Synonym		WCSP
Alnus hirsuta var. sibirica (Spach) C.K.Schneid.	Synonym		WCSP
Alnus hirtella (Franch. & Sav.) Koidz.	Synonym		WCSP
Alnus × hosoii Mizush.	Accepted		WCSP
Alnus × hybrida Rchb.	Synonym		WCSP
Alnus × hybrida f. badensis (Láng ex Hagenb.) Callier	Synonym		WCSP
Alnus × hybrida var. intermedia (Callier) Callier	Synonym		WCSP
Alnus × hybrida var. pomeranica Callier	Synonym		WCSP
Alnus × hybrida var. viridior (Callier) Callier	Synonym		WCSP
Alnus imperialis Dippel	Synonym		WCSP
Alnus incana (L.) Moench	Accepted		WCSP
Alnus incana f. acuminata (Regel) Regel	Synonym		WCSP
Alnus incana var. acuminata (Regel) Regel	Synonym		WCSP
Alnus incana f. acutiloba Callier	Synonym		WCSP
Alnus incana var. alpestris Brügger	Synonym		WCSP
Alnus incana var. americana Regel	Synonym		WCSP
Alnus incana var. angulata (Aiton) Willd.	Synonym		WCSP
Alnus incana var. arcuata Skarman	Synonym		WCSP
Alnus incana var. argentata Norrl.	Synonym		WCSP
Alnus incana var. argentea Norrl. ex Gürke	Synonym		WCSP
Alnus incana var. argentea Norrl.	Synonym		TRO
Alnus incana f. argyrophylla Callier	Synonym		WCSP
Alnus incana var. bipinnatifida (Brenner) Tzvelev	Synonym		WCSP
Alnus incana f. bipinnatifida Brenner	Synonym		WCSP
Alnus incana f. blyttiana Callier	Synonym		WCSP
Alnus incana var. borealis Norrl.	Synonym		WCSP
Alnus incana var. bornmuelleri Callier	Synonym		WCSP
Alnus incana f. brachyphylla Callier	Synonym		WCSP
Alnus incana var. confusa Brenner	Synonym		WCSP
Alnus incana f. cordifolia Callier	Synonym		WCSP
Alnus incana f. crataegifolia Callier	Synonym		WCSP
Alnus incana f. dubia Callier	Synonym		WCSP
Alnus incana var. emarginata Matsum.	Synonym		WCSP
Alnus incana f. flavescens Callier	Synonym		WCSP
Alnus incana var. glabra Blytt	Synonym		WCSP
Alnus incana var. glabrescens Spach	Synonym		WCSP
Alnus incana var. glauca (Aiton) Willd.	Synonym		WCSP
Alnus incana var. glauca Regel	Synonym		TRO
Alnus incana var. glaucophylla Callier	Synonym		WCSP
Alnus incana subsp. hirsuta (Spach) Á.Löve & D.Löve	Synonym		WCSP
Alnus incana var. hirsuta Spach	Synonym		WCSP
Alnus incana var. hypochlora Callier	Synonym		WCSP
Alnus incana subsp. incana	Accepted		WCSP
Alnus incana f. incisa Dippel	Synonym		WCSP
Alnus incana var. intermedia (Schrad. ex Regel) Nyman	Synonym		WCSP
Alnus incana subsp. kolaensis (Orlova) Á.Löve & D.Löve	Accepted		WCSP
Alnus incana var. leptophylla Callier	Synonym		WCSP
Alnus incana f. microcarpa Callier	Synonym		WCSP
Alnus incana f. microconus Callier	Synonym		WCSP
Alnus incana var. microconus Neumann	Synonym		WCSP
Alnus incana var. microjula Grütter	Synonym		WCSP
Alnus incana f. microphylla Callier	Synonym		WCSP
Alnus incana f. monstrosa Dippel	Synonym		WCSP
Alnus incana var. oblongifrons Callier	Synonym		WCSP
Alnus incana var. obtusifolia Callier	Synonym		WCSP
Alnus incana var. occidentalis (Dippel) Hitche	Synonym		WCSP
Alnus incana var. orbicularis Callier	Synonym		WCSP
Alnus incana var. ovalifolia Durand & Pittier	Synonym		WCSP
Alnus incana var. ovalis Callier	Synonym		WCSP
Alnus incana var. ovata Regel	Synonym		WCSP
Alnus incana f. oxyloba Callier	Synonym		WCSP
Alnus incana f. pallida Dippel	Synonym		WCSP
Alnus incana var. parvifolia Regel	Synonym		WCSP
Alnus incana f. pendula C.K.Schneid.	Synonym		WCSP
Alnus incana var. pendula (C.K.Schneid.) Bean	Synonym		WCSP
Alnus incana var. pinnata (Lundmark) Willd.	Synonym		WCSP
Alnus incana f. pinnata (Lundmark) H.J.P.Winkl.	Synonym		WCSP
Alnus incana var. pinnatifida Regel	Synonym		WCSP
Alnus incana f. pinnatifida (Regel) Dippel	Synonym		WCSP
Alnus incana f. pinnatipartita Norrl.	Synonym		WCSP
Alnus incana f. pinnatisecta Callier	Synonym		WCSP
Alnus incana var. pseudospuria Callier	Synonym		WCSP
Alnus incana var. pubescens (Tausch) Zumagl.	Synonym		WCSP
Alnus incana var. rubra (Bong.) Regel	Synonym		WCSP
Alnus incana subsp. rugosa (Du Roi) R.T.Clausen	Accepted		WCSP
Alnus incana var. sericea Christ	Synonym		WCSP
Alnus incana var. serrulata (Aiton) B.Boivin	Synonym		WCSP
Alnus incana var. sibirica Spach	Synonym		WCSP
Alnus incana f. subargentata Callier	Synonym		WCSP
Alnus incana f. subcordata Callier	Synonym		WCSP
Alnus incana f. subcordifolia Callier	Synonym		WCSP
Alnus incana var. subrotunda Callier	Synonym		WCSP
Alnus incana f. subsericea Callier	Synonym		WCSP
Alnus incana subsp. tenuifolia (Nutt.) Breitung	Accepted		WCSP
Alnus incana var. tinctoria (Sarg.) H.J.P.Winkl.	Synonym		WCSP
Alnus incana var. tomentosa Blytt	Synonym		WCSP
Alnus incana var. tomophylla (Fernald) Rehder	Synonym		WCSP
Alnus incana f. tomophylla Fernald	Synonym		WCSP
Alnus incana f. tortuosa Nitz.	Synonym		WCSP
Alnus incana var. virescens Wahlenb.	Synonym		WCSP
Alnus incana var. virescens S.Watson	Synonym		WCSP
Alnus incisa Steud.	Synonym		WCSP
Alnus inokumae Murai & Kusaka	Synonym		WCSP
Alnus integrifolia Roxb. ex Steud. [Invalid]	Synonym		WCSP
Alnus × intermedia K.Koch [Invalid]	Synonym		WCSP
Alnus intermedia Schrad. ex Regel	Synonym		WCSP
Alnus jackii Hu	Synonym		WCSP
Alnus japonica Siebold & Zucc. [Illegitimate]	Synonym		WCSP
Alnus japonica (Thunb.) Steud.	Accepted		WCSP
Alnus japonica var. arguta (Regel) Callier	Synonym		WCSP
Alnus japonica f. arguta (Regel) H.Ohba	Synonym		WCSP
Alnus japonica var. borealis (Koidz.) S.L.Tung	Synonym		WCSP
Alnus japonica var. formosana (Burkill) Callier	Synonym		WCSP
Alnus japonica var. koreana Callier	Synonym		WCSP
Alnus japonica f. koreana (Callier) H.Ohba	Synonym		WCSP
Alnus japonica var. latifolia Callier	Synonym		WCSP
Alnus japonica var. minor Miq.	Synonym		WCSP
Alnus japonica var. reginosa Nakai	Synonym		WCSP
Alnus japonica var. rufinervis Honda	Synonym		WCSP
Alnus japonica var. villosa L.Zhao & D.Chen	Synonym		WCSP
Alnus jorullensis Kunth	Accepted		WCSP
Alnus jorullensis Benth.	Misapplied		WCSP
Alnus jorullensis var. acuminata (Kunth) Kuntze	Synonym		WCSP
Alnus jorullensis var. acutissima H.J.P.Winkl.	Synonym		WCSP
Alnus jorullensis f. angustifolia H.J.P.Winkl.	Synonym		WCSP
Alnus jorullensis var. castaneifolia (Mirb.) Regel	Synonym		WCSP
Alnus jorullensis var. exigua Fernald	Synonym		WCSP
Alnus jorullensis var. ferruginea (Kunth) Kuntze	Synonym		WCSP
Alnus jorullensis subsp. jorullensis	Accepted		WCSP
Alnus jorullensis var. liebmannii Callier	Synonym		WCSP
Alnus jorullensis subsp. lutea Furlow	Accepted		WCSP
Alnus jorullensis f. macrocarpa H.J.P.Winkl.	Synonym		WCSP
Alnus jorullensis f. media H.J.P.Winkl.	Synonym		WCSP
Alnus jorullensis var. mirbelii (Spach) H.J.P.Winkl.	Synonym		WCSP
Alnus jorullensis var. spachii Regel	Synonym		WCSP
Alnus kamschatica (Regel) Kudô ex Masam.	Synonym		WCSP
Alnus katoana Yanagita	Synonym		WCSP
Alnus × koehnei Callier [Unplaced]	Unresolved		WCSP
Alnus kolaensis Orlova	Synonym		WCSP
Alnus laciniata Ehrh.	Unresolved		TRO
Alnus lanata Duthie ex Bean	Accepted		WCSP
Alnus lanceolata Phil.	Synonym		WCSP
Alnus languinosa Gilib. [Invalid]	Synonym		WCSP
Alnus latifolia Desf.	Synonym		WCSP
Alnus lindenii Regel	Synonym		WCSP
Alnus × ljungeri Murai	Unresolved		TRO
Alnus lobata Nyman	Unresolved		TRO
Alnus longifolia Bové ex Spach	Synonym		WCSP
Alnus macrocarpa Lodd. ex Loudon	Synonym		WCSP
Alnus macrocarpa Req. ex Nyman	Synonym		WCSP
Alnus macrophylla Desf. ex Steud.	Synonym		WCSP
Alnus mairei H.Lév.	Accepted		WCSP
Alnus mandshurica (Callier) Hand.-Mazz.	Accepted		WCSP
Alnus mandshurica f. barbinervis (Nakai) W.Lee	Synonym		WCSP
Alnus mandshurica var. pubescens (Nakai) A.I.Baranov	Synonym		WCSP
Alnus mandshurica f. pubescens (Nakai) Kitag.	Synonym		WCSP
Alnus maritima (Marshall) Muhl. ex Nutt.	Accepted		WCSP
Alnus maritima var. arguta Regel	Synonym		WCSP
Alnus maritima var. formosana Burkill	Synonym		WCSP
Alnus maritima subsp. georgiensis J.A.Schrad. & W.R.Graves	Synonym		WCSP
Alnus maritima var. japonica (Thunb.) Regel	Synonym		WCSP
Alnus maritima var. obtusata Franch. & Sav.	Synonym		WCSP
Alnus maritima subsp. oklahomensis J.A.Schrad. & W.R.Graves	Synonym		WCSP
Alnus matsumurae Callier	Accepted		WCSP
Alnus maximowiczii Callier	Accepted		WCSP
Alnus maximowiczii var. parvifolia Callier	Synonym		WCSP
Alnus maximowiczii var. sachalinensis (Koidz.) Nemoto	Synonym		WCSP
Alnus × mayrii Callier	Accepted		WCSP
Alnus × mayrii var. glabrescens Nakai	Synonym		WCSP
Alnus × mayrii var. intermedia H.Hara	Synonym		WCSP
Alnus metoporina Furlow [Illegitimate]	Synonym		WCSP
Alnus microphylla Arv.-Touv. [Unplaced]	Unresolved		WCSP
Alnus minor (Tourr.) Chiov.	Synonym		WCSP
Alnus mirbelii Spach	Synonym		WCSP
Alnus mirbelii var. acutissima (H.J.P.Winkl.) Callier	Synonym		WCSP
Alnus mitchelliana M.A.Curtis ex A.Gray	Synonym		WCSP
Alnus mollis Fernald	Synonym		WCSP
Alnus × montana Brügger	Synonym		WCSP
Alnus morisiana Bertol.	Synonym		WCSP
Alnus multinervis (Regel) Callier	Synonym		WCSP
Alnus multinervis var. nikkoensis Callier	Synonym		WCSP
Alnus nagurae Inokuma	Synonym		WCSP
Alnus nana (L.) Clairv.	Synonym		WCSP
Alnus neapolitana Savi	Synonym		WCSP
Alnus nepalensis D.Don	Accepted		WCSP
Alnus nervosus Dippel	Synonym		WCSP
Alnus nigra Gilib. [Invalid]	Synonym		WCSP
Alnus × nikolskensis Mandl	Synonym		WCSP
Alnus nitens K.Koch	Synonym		WCSP
Alnus nitida (Spach) Endl.	Accepted		WCSP
Alnus noveboracensis Britton	Synonym		WCSP
Alnus obcordata C.A.Mey. ex Steud. [Spelling variant]	Synonym		WCSP
Alnus oblongata Kotschy ex Regel	Synonym		WCSP
Alnus oblongata (Aiton) Willd.	Synonym		WCSP
Alnus oblongata var. oblonga Regel	Synonym		WCSP
Alnus oblongifolia Torr.	Accepted		WCSP
Alnus obtusata (Franch. & Sav.) Makino	Synonym		WCSP
Alnus obtusifolia Mert. ex Regel	Unresolved		TRO
Alnus occidentalis Dippel	Synonym		WCSP
Alnus orbiculata Lopylaie ex Spach [Invalid]	Synonym		WCSP
Alnus oregana Nutt.	Synonym		WCSP
Alnus orientalis Decne.	Accepted		WCSP
Alnus orientalis var. longifolia H.J.P.Winkl.	Synonym		WCSP
Alnus orientalis var. ovalifolia H.J.P.Winkl.	Synonym		WCSP
Alnus orientalis f. puberula Callier	Synonym		WCSP
Alnus orientalis var. pubescens Dippel	Synonym		WCSP
Alnus orientalis f. tomentosa (Hartig) H.J.P.Winkl.	Synonym		WCSP
Alnus orientalis var. weissii H.J.P.Winkl.	Synonym		WCSP
Alnus orientalis f. winkleri Callier	Synonym		WCSP
Alnus ovalifolia Bartlett	Synonym		WCSP
Alnus ovata (Schrank) Lodd.	Synonym		WCSP
Alnus ovata f. macrophylla Lange	Synonym		WCSP
Alnus ovata f. repens (Wormsk. ex Hornem.) Kjellm.	Synonym		WCSP
Alnus ovata var. repens (Wormsk. ex Hornem.) Lange	Synonym		WCSP
Alnus oxyacantha Lavalle [Unplaced]	Unresolved		WCSP
Alnus oxyacanthifolia Lodd.	Synonym		WCSP
Alnus paniculata Nakai	Accepted		WCSP
Alnus × peculiaris Hiyama	Accepted		WCSP
Alnus pendula Matsum.	Accepted		WCSP
Alnus plicata K.Koch	Synonym		WCSP
Alnus pringlei Fernald	Synonym		WCSP
Alnus prunifolia K.Koch	Synonym		WCSP
Alnus × pubescens Tausch	Accepted		WCSP
Alnus pumila Steud.	Synonym		WCSP
Alnus × purpusii Callier [Unplaced]	Unresolved		WCSP
Alnus quercifolia Willd.	Synonym		WCSP
Alnus reginosa Nakai	Synonym		WCSP
Alnus repens Wormsk. ex Hornem.	Synonym		WCSP
Alnus rhombifolia Nutt.	Accepted		WCSP
Alnus rhombifolia var. bernardina Munz & I.M.Johnst.	Synonym		WCSP
Alnus rhombifolia var. ovalis H.J.P.Winkl.	Synonym		WCSP
Alnus rotundifolia Stokes	Synonym		WCSP
Alnus rotundifolia Bertol. [Illegitimate]	Synonym		WCSP
Alnus rubra Bong.	Accepted		WCSP
Alnus rubra Desf. ex Steud. [Invalid]	Synonym		WCSP
Alnus rubra var. pinnatisecta Starker	Synonym		WCSP
Alnus rubra f. pinnatisecta (Starker) Rehder	Synonym		WCSP
Alnus rufescens Liebm. ex Hemsl.	Synonym		WCSP
Alnus rugosa (Du Roi) Spreng.	Synonym		WCSP
Alnus rugosa var. americana (Regel) Fernald	Synonym		WCSP
Alnus rugosa f. emersoniana Fernald	Synonym		WCSP
Alnus rugosa f. hypomalaca Fernald	Synonym		WCSP
Alnus rugosa var. obtusifolia (Regel) H.J.P.Winkl.	Synonym		WCSP
Alnus rugosa var. occidentalis (Dippel) C.L. Hitchc.	Synonym		TRO
Alnus rugosa var. serrulata (Aiton) H.J.P.Winkl.	Synonym		WCSP
Alnus rugosa f. tomophylla (Fernald) Fernald	Synonym		WCSP
Alnus rugosa var. tomophylla (Fernald) Fernald	Synonym		TRO
Alnus schneideri Callier	Synonym		WCSP
Alnus serrulata (Aiton) Willd.	Accepted		WCSP
Alnus serrulata f. emarginata Fernald	Synonym		WCSP
Alnus serrulata var. macrophylla Spach	Synonym		WCSP
Alnus serrulata f. mollescens Fernald	Synonym		WCSP
Alnus serrulata f. nanella Fernald	Synonym		WCSP
Alnus serrulata f. noveboracensis (Britton) Fernald	Synonym		WCSP
Alnus serrulata var. oblongifolia (Torr.) Regel	Synonym		WCSP
Alnus serrulata var. obtusifolia (Regel) Regel	Synonym		WCSP
Alnus serrulata var. pumila Demcker	Synonym		WCSP
Alnus serrulata var. rugosa (Du Roi) Regel	Synonym		WCSP
Alnus serrulata var. subelliptica Fernald	Synonym		WCSP
Alnus serrulatoides Callier	Accepted		WCSP
Alnus serrulatoides var. katoana (Yanagita) Sugim.	Synonym		WCSP
Alnus serrulatoides f. katoana (Yanagita) H.Ohba	Synonym		WCSP
Alnus sibirica (Spach) Turcz. ex Kom.	Synonym		WCSP
Alnus sibirica Fisch. ex Turcz.	Synonym		TRO
Alnus sibirica f. acutiloba Koidz.	Synonym		WCSP
Alnus sibirica f. glabra (Callier) Koidz.	Synonym		WCSP
Alnus sibirica var. hirsuta (Spach) Koidz.	Synonym		WCSP
Alnus sibirica f. hirsutoides Koidz.	Synonym		WCSP
Alnus sibirica f. obtusiloba Koidz.	Synonym		WCSP
Alnus sibirica var. oxyloba C.K.Schneid.	Synonym		WCSP
Alnus sibirica var. paucinervis C.K.Schneid.	Synonym		WCSP
Alnus sibirica var. tinctoria (Sarg.) Koidz.	Synonym		WCSP
Alnus sieboldiana Matsum.	Accepted		WCSP
Alnus × silesiaca Fiek [Unplaced]	Unresolved		WCSP
Alnus × silesiaca var. macrocarpa Callier	Synonym		WCSP
Alnus sinuata (Regel) Rydb.	Synonym		WCSP
Alnus sinuata var. kamtschatica (Callier) Callier	Synonym		WCSP
Alnus sinuata var. stenophylla (H.J.P.Winkl.) Callier	Synonym		WCSP
Alnus sitchensis (Regel) Sarg.	Synonym		WCSP
Alnus sitchensis var. kamtschatica Callier	Synonym		WCSP
Alnus sorbifolia H.J.P.Winkl. [Invalid]	Synonym		WCSP
Alnus spachii (Regel) Callier	Synonym		WCSP
Alnus × spaethii Callier [Unplaced]	Unresolved		WCSP
Alnus × spuria Callier	Synonym		WCSP
Alnus × spuria subsp. beckii (Callier) H.J.P.Winkl.	Synonym		WCSP
Alnus × spuria var. figertii Callier	Synonym		WCSP
Alnus × spuria var. hybrida Callier	Synonym		WCSP
Alnus × spuria var. intermedia Callier	Synonym		WCSP
Alnus × spuria subsp. tauschiana (Callier) H.J.P.Winkl.	Synonym		WCSP
Alnus × spuria f. viridior Callier	Synonym		WCSP
Alnus suaveolens Morel ex Nyman [Invalid]	Synonym		WCSP
Alnus suaveolens Req.	Synonym		WCSP
Alnus subcordata C.A.Mey.	Accepted		WCSP
Alnus subcordata var. villosa (Regel) H.J.P.Winkl.	Synonym		WCSP
Alnus subrotunda Desf. [Unplaced]	Unresolved		WCSP
Alnus × suginoi Sugim.	Accepted		WCSP
Alnus × tauschiana Callier [Illegitimate]	Synonym		WCSP
Alnus × tauschiana var. hybrida Callier	Synonym		WCSP
Alnus tenuifolia Nutt.	Synonym		WCSP
Alnus tenuifolia f. incisa W.A.Weber	Synonym		WCSP
Alnus tenuifolia var. occidentalis (Dippel) Callier	Synonym		WCSP
Alnus tenuifolia var. virescens (S.Watson) Callier	Synonym		WCSP
Alnus tiliifolia K.Koch	Synonym		WCSP
Alnus tinctoria Sarg.	Synonym		WCSP
Alnus tinctoria f. acutiloba (Koidz.) H.Hara	Synonym		WCSP
Alnus tinctoria var. glabra Callier	Synonym		WCSP
Alnus tinctoria f. hirsutoides (Koidz.) H.Hara	Synonym		WCSP
Alnus tinctoria var. mandschurica Callier	Synonym		WCSP
Alnus tinctoria var. microphylla Nakai	Synonym		WCSP
Alnus tinctoria var. obtusiloba Callier	Synonym		WCSP
Alnus tinctoria var. velutina H.Hara	Synonym		WCSP
Alnus tirolensis Nyman	Synonym		WCSP
Alnus tomentosa Hartig	Synonym		WCSP
Alnus trabeculosa Hand.-Mazz.	Accepted		WCSP
Alnus trabeculosa var. hunanensis S.B.Wan	Synonym		WCSP
Alnus trabeculosa var. nagurae (Inokuma) Murai	Synonym		WCSP
Alnus tristis Wormsk. ex Regel	Synonym		WCSP
Alnus undulata Willd.	Synonym		WCSP
Alnus vermicularis Nakai	Accepted		WCSP
Alnus vilmoriana Lebas [Unplaced]	Unresolved		WCSP
Alnus viridis A.Gray [Illegitimate]	Synonym		WCSP
Alnus viridis (Chaix) DC.	Accepted		WCSP
Alnus viridis subsp. brembana (Rota) P.A.Schmidt	Synonym		WCSP
Alnus viridis var. brembana (Rota) Nyman	Synonym		WCSP
Alnus viridis var. crispa (Aiton) House	Synonym		WCSP
Alnus viridis subsp. crispa (Aiton) Turrill	Accepted		WCSP
Alnus viridis var. fernaldii House	Synonym		WCSP
Alnus viridis var. fruticosa (Rupr.) Regel	Synonym		WCSP
Alnus viridis subsp. fruticosa (Rupr.) Nyman	Accepted		WCSP
Alnus viridis var. glabra Cham.	Synonym		WCSP
Alnus viridis f. groenlandica Callier	Synonym		WCSP
Alnus viridis f. hirtella Callier	Synonym		WCSP
Alnus viridis f. macrophylla Callier	Synonym		WCSP
Alnus viridis subsp. maximowiczii (Callier) D.Löve	Synonym		WCSP
Alnus viridis subsp. maximowiczii (Callier ex C.K. Schneid.) H. Ohba	Synonym		TRO
Alnus viridis subsp. maximowiczii (Callier ex C.K. Schneid.) Hultén	Synonym		TRO
Alnus viridis var. microphylla Cham.	Synonym		WCSP
Alnus viridis var. parvifolia Regel	Synonym		WCSP
Alnus viridis f. pilosa Callier	Synonym		WCSP
Alnus viridis f. pubescens Callier	Synonym		WCSP
Alnus viridis var. repens (Wormsk. ex Hornem.) Callier	Synonym		WCSP
Alnus viridis var. sibirica Regel	Synonym		WCSP
Alnus viridis var. sinuata Regel	Synonym		WCSP
Alnus viridis subsp. sinuata (Regel) Á.Löve & D.Löve	Accepted		WCSP
Alnus viridis var. stenoptera Regel	Synonym		WCSP
Alnus viridis var. suaveolens (Req.) Regel	Synonym		WCSP
Alnus viridis subsp. suaveolens (Req.) P.W.Ball	Accepted		WCSP
Alnus viridis var. subvestita Zapal.	Synonym		WCSP
Alnus viridis f. subvestita (Zapal.) Callier	Synonym		WCSP
Alnus viridis subsp. viridis	Accepted		WCSP
Alnus vulgaris Hill [Invalid]	Synonym		WCSP
Alnus washinhtonia Wetzel	Unresolved		TRO
Alnus yasha Matsum.	Synonym		WCSP
Alnus yasha var. macrocarpa Callier	Synonym		WCSP
Alnus yasha var. microcarpa Callier	Synonym		WCSP