| Trillium acuminatum Raf. |
Synonym |
 |
WCSP |
| Trillium affine Rendle |
Synonym |
|
WCSP |
| Trillium albidum J.D.Freeman |
Accepted |
|
WCSP |
| Trillium album (Michx.) Small |
Synonym |
|
WCSP |
| Trillium amabile Miyabe & Tatew. |
Accepted |
|
WCSP |
| Trillium amblopsis Raf. [Unplaced] |
Unresolved |
 |
WCSP |
| Trillium angustifolium Raf. |
Synonym |
|
WCSP |
| Trillium angustipetalum (Torr.) J.D.Freeman |
Accepted |
|
WCSP |
| Trillium apetalon Makino |
Synonym |
|
WCSP |
| Trillium apetalon f. atropurpureocarpum Makino |
Synonym |
|
WCSP |
| Trillium apetalon f. viridicarpum Makino |
Synonym |
|
WCSP |
| Trillium apetalon f. viridipurpureocarpum Makino |
Synonym |
|
WCSP |
| Trillium atropurpureum Raf. [Illegitimate] |
Synonym |
|
WCSP |
| Trillium atropurpureum M.A.Curtis ex L.C.Beck |
Synonym |
|
WCSP |
| Trillium balduinianum Raf. |
Synonym |
|
WCSP |
| Trillium brevipes Raf. [Unplaced] |
Unresolved |
|
WCSP |
| Trillium brevipetalum Raf. [Unplaced] |
Unresolved |
|
WCSP |
| Trillium californicum Kellogg |
Synonym |
|
WCSP |
| Trillium camschatcense Ker Gawl. |
Accepted |
|
WCSP |
| Trillium camschatcense var. kurilense (Tatew.) H.Nakai & Koji Ito |
Synonym |
|
WCSP |
| Trillium camschatcense f. plenum (J.Samej.) H.Nakai & Koji Ito |
Synonym |
|
WCSP |
| Trillium camschatcense f. polyphyllum (J.Samej.) H.Nakai & Koji Ito |
Synonym |
|
WCSP |
| Trillium camschatcense var. soyanum (J.Samej.) H.Nakai & Koji Ito |
Synonym |
|
WCSP |
| Trillium camschatcense var. tschonoskii (Maxim.) Vorosch. |
Synonym |
|
WCSP |
| Trillium camschatcense f. violaceum (Miyabe & Tatew.) H.Nakai & Koji Ito |
Synonym |
|
WCSP |
| Trillium camtschaticum Pall. ex Pursh |
Synonym |
 |
TRO |
| Trillium catesbaei Elliott |
Accepted |
|
WCSP |
| Trillium cernuum L. |
Accepted |
|
WCSP |
| Trillium cernuum f. billingtonii Farw. |
Synonym |
|
WCSP |
| Trillium cernuum var. declinatum Farw. |
Synonym |
|
WCSP |
| Trillium cernuum f. lalondei Cay. & J.Cay. |
Synonym |
|
WCSP |
| Trillium cernuum var. macranthum Eames & Wiegand |
Synonym |
|
WCSP |
| Trillium cernuum f. marginatum Cay. & J.Cay. |
Synonym |
|
WCSP |
| Trillium cernuum f. tangerae Wherry |
Synonym |
|
WCSP |
| Trillium cernuum var. terrae-novae B.Boivin |
Synonym |
|
WCSP |
| Trillium cernuum f. viride Cay. & J.Cay. |
Synonym |
|
WCSP |
| Trillium cernuum f. walpolei Farw. |
Synonym |
|
WCSP |
| Trillium chandleri Farw. |
Synonym |
|
WCSP |
| Trillium chandleri f. foliaceum Farw. |
Synonym |
|
WCSP |
| Trillium chandleri f. gladewitzii Farw. |
Synonym |
|
WCSP |
| Trillium chandleri f. palaceum Farw. |
Synonym |
|
WCSP |
| Trillium chandleri f. plenum Farw. |
Synonym |
|
WCSP |
| Trillium chandleri f. subulatum Farw. |
Synonym |
|
WCSP |
| Trillium channellii Fukuda, J.D.Freeman & Itou |
Accepted |
|
WCSP |
| Trillium chloropetalum (Torr.) Howell |
Accepted |
|
WCSP |
| Trillium chloropetalum var. angustipetalum (Torr.) Munz |
Synonym |
|
WCSP |
| Trillium chloropetalum subsp. giganteum (Hook. & Arn.) A.E.Murray |
Synonym |
|
WCSP |
| Trillium chloropetalum var. giganteum (Hook. & Arn.) Munz |
Accepted |
|
WCSP |
| Trillium cleavelandicum Alph.Wood |
Synonym |
|
WCSP |
| Trillium crassifolium Piper |
Synonym |
|
WCSP |
| Trillium × crockerianum Halda |
Accepted |
|
WCSP |
| Trillium cuneatum Raf. |
Accepted |
|
WCSP |
| Trillium cuneatum f. luteum J.D.Freeman |
Synonym |
|
WCSP |
| Trillium decipiens J.D.Freeman |
Accepted |
|
WCSP |
| Trillium declinatum Raf. |
Synonym |
|
WCSP |
| Trillium declinatum Gleason [Illegitimate] |
Synonym |
|
WCSP |
| Trillium declinatum f. walpolei Friesner |
Synonym |
|
WCSP |
| Trillium decumbens Harb. |
Accepted |
|
WCSP |
| Trillium discolor Hook. |
Accepted |
|
WCSP |
| Trillium divaricatum Raf. [Unplaced] |
Unresolved |
|
WCSP |
| Trillium erectum L. |
Accepted |
|
WCSP |
| Trillium erectum f. albiflorum R.Hoffm. |
Synonym |
|
WCSP |
| Trillium erectum var. album (Michx.) Pursh |
Accepted |
|
WCSP |
| Trillium erectum var. atropurpureum (Michx.) Pursh |
Synonym |
|
WCSP |
| Trillium erectum var. blandum Jennison |
Synonym |
|
WCSP |
| Trillium erectum f. brevipedicellatum Louis-Marie |
Synonym |
|
WCSP |
| Trillium erectum var. cahnae Farw. |
Synonym |
|
WCSP |
| Trillium erectum f. cahnae (Farw.) Louis-Marie |
Synonym |
|
WCSP |
| Trillium erectum var. declinatum A.Gray |
Synonym |
|
WCSP |
| Trillium erectum var. erectum |
Accepted |
|
WCSP |
| Trillium erectum var. flavum Torr. |
Synonym |
|
WCSP |
| Trillium erectum var. giganteum Louis-Marie |
Synonym |
|
WCSP |
| Trillium erectum var. horizontale Louis-Marie |
Synonym |
|
WCSP |
| Trillium erectum var. japonicum A.Gray |
Synonym |
|
WCSP |
| Trillium erectum f. luteum Louis-Marie |
Synonym |
|
WCSP |
| Trillium erectum f. nigrescens Louis-Marie |
Synonym |
|
WCSP |
| Trillium erectum f. pallidandrum Vict. & J.Rousseau |
Synonym |
|
WCSP |
| Trillium erectum f. parviflorum Louis-Marie |
Synonym |
|
WCSP |
| Trillium erectum f. parvum Louis-Marie |
Synonym |
|
WCSP |
| Trillium erectum f. polymerum Vict. |
Synonym |
|
WCSP |
| Trillium erectum f. rubrostriatum Louis-Marie |
Synonym |
|
WCSP |
| Trillium erectum f. sessiloides B.Boivin |
Synonym |
|
WCSP |
| Trillium erectum f. simile (Gleason) H.E.Ahles |
Synonym |
|
WCSP |
| Trillium erectum var. sulcatum Barksd. |
Synonym |
|
WCSP |
| Trillium erectum var. vaseyi (Harb.) H.E.Ahles |
Synonym |
|
WCSP |
| Trillium erectum var. viridiflorum Curtis |
Synonym |
|
WCSP |
| Trillium erythrocarpum Michx. |
Synonym |
|
WCSP |
| Trillium erythrocarpum Curtis [Illegitimate] |
Synonym |
|
WCSP |
| Trillium erythrocarpum var. cleavelandicum Alph. Wood |
Synonym |
|
TRO |
| Trillium flavum Raf. |
Synonym |
|
WCSP |
| Trillium flexipes Raf. |
Accepted |
|
WCSP |
| Trillium flexipes f. walpolei (Farw.) Fernald |
Synonym |
|
TRO |
| Trillium foetidissimum J.D.Freeman |
Accepted |
|
WCSP |
| Trillium foetidissimum f. luteum J.D.Freeman |
Synonym |
|
WCSP |
| Trillium foetidum Salisb. |
Synonym |
|
WCSP |
| Trillium giganteum (Hook. & Arn.) A.Heller |
Synonym |
|
WCSP |
| Trillium giganteum var. angustipetalum (Torr.) R.R.Gates |
Synonym |
|
WCSP |
| Trillium giganteum var. chloropetalum (Torr.) R.R.Gates |
Synonym |
|
WCSP |
| Trillium glaucum Raf. |
Synonym |
|
WCSP |
| Trillium gleasonii Fernald |
Synonym |
|
WCSP |
| Trillium govanianum Wall. ex D.Don |
Accepted |
|
WCSP |
| Trillium gracile J.D.Freeman |
Accepted |
|
WCSP |
| Trillium gracile f. luteum J.D.Freeman |
Synonym |
|
WCSP |
| Trillium grandiflorum (Michx.) Salisb. |
Accepted |
|
WCSP |
| Trillium grandiflorum f. chandleri (Farw.) Vict. |
Synonym |
|
TRO |
| Trillium grandiflorum f. dimerum Louis-Marie |
Synonym |
|
WCSP |
| Trillium grandiflorum f. divisum Louis-Marie |
Synonym |
|
WCSP |
| Trillium grandiflorum f. elongatum Louis-Marie |
Synonym |
|
WCSP |
| Trillium grandiflorum f. lirioides (Raf.) Vict. |
Synonym |
|
TRO |
| Trillium grandiflorum var. minimum N.Coleman |
Synonym |
|
WCSP |
| Trillium grandiflorum f. petalosum Louis-Marie |
Synonym |
|
WCSP |
| Trillium grandiflorum f. regressum Louis-Marie |
Synonym |
|
WCSP |
| Trillium grandiflorum f. striatum Louis-Marie |
Synonym |
|
WCSP |
| Trillium × hagae Miyabe & Tatew. |
Accepted |
|
WCSP |
| Trillium hamosum Raf. |
Synonym |
|
WCSP |
| Trillium hugeri Small |
Synonym |
|
WCSP |
| Trillium hugeri f. flavum Peattie |
Synonym |
|
WCSP |
| Trillium isanthum Raf. |
Synonym |
|
WCSP |
| Trillium japonicum (Franch. & Sav.) Matsum. |
Synonym |
|
WCSP |
| Trillium kamtschaticum Pall. ex Pursh |
Synonym |
|
WCSP |
| Trillium kamtschaticum var. kurilense Tatew. |
Synonym |
|
WCSP |
| Trillium kamtschaticum f. plenum J.Samej. |
Synonym |
|
WCSP |
| Trillium kamtschaticum f. polyphyllum J.Samej. |
Synonym |
|
WCSP |
| Trillium kamtschaticum var. rhombifolium A.E.Murray |
Synonym |
|
WCSP |
| Trillium kamtschaticum subsp. rhombifolium A.E.Murray |
Synonym |
|
WCSP |
| Trillium kamtschaticum var. soyanum J.Samej. |
Synonym |
|
WCSP |
| Trillium kamtschaticum f. violaceum Miyabe & Tatew. |
Synonym |
|
WCSP |
| Trillium kamtschatikum Ledeb. |
Synonym |
|
WCSP |
| Trillium × klineanum Halda |
Synonym |
|
WCSP |
| Trillium × komarovii H.Nakai & Koji Ito |
Accepted |
|
WCSP |
| Trillium kurabayashii J.D.Freeman |
Accepted |
|
WCSP |
| Trillium kurabayashii f. luteum V.G.Soukup |
Synonym |
|
WCSP |
| Trillium lanceolatum Boykin ex S.Watson |
Synonym |
|
WCSP |
| Trillium lanceolatum var. rectistamineum R.R.Gates |
Synonym |
|
WCSP |
| Trillium lancifolium Raf. |
Accepted |
|
WCSP |
| Trillium latifolium Raf. |
Synonym |
|
WCSP |
| Trillium lirioides Raf. |
Synonym |
|
WCSP |
| Trillium lirioides f. albomarginatum Farw. |
Synonym |
|
WCSP |
| Trillium lirioides f. giganteum Farw. |
Synonym |
|
WCSP |
| Trillium lirioides var. longipetiolatum Farw. |
Synonym |
|
WCSP |
| Trillium lirioides f. subsessile Farw. |
Synonym |
|
WCSP |
| Trillium lirioides f. ungulatum Farw. |
Synonym |
|
WCSP |
| Trillium lirioides f. variegatum Farw. |
Synonym |
|
WCSP |
| Trillium liroides f. vegetum Farw. |
Synonym |
|
WCSP |
| Trillium longiflorum Raf. |
Synonym |
|
WCSP |
| Trillium ludovicianum Harb. |
Accepted |
|
WCSP |
| Trillium luteum (Muhl.) Harb. |
Accepted |
|
WCSP |
| Trillium luteum var. latipetalum R.R.Gates |
Synonym |
|
WCSP |
| Trillium maculatum Raf. |
Accepted |
|
WCSP |
| Trillium maculatum f. luteum J.D.Freeman |
Synonym |
|
WCSP |
| Trillium maculatum f. simulans J.D.Freeman |
Synonym |
|
WCSP |
| Trillium medium Raf. |
Synonym |
|
WCSP |
| Trillium membranaceum Raf. |
Synonym |
|
WCSP |
| Trillium × miyabeanum Tatew. ex J.Samej. |
Accepted |
|
WCSP |
| Trillium × miyabeanum f. albiflorum V.G.Soukup |
Synonym |
|
WCSP |
| Trillium morii Hayata |
Synonym |
|
WCSP |
| Trillium nervosum Elliott |
Synonym |
|
WCSP |
| Trillium nivale Riddell |
Accepted |
|
WCSP |
| Trillium nutans Raf. |
Synonym |
|
WCSP |
| Trillium obcordatum Raf. |
Synonym |
|
WCSP |
| Trillium obovatum Pursh |
Synonym |
|
WCSP |
| Trillium obovatum Hook. [Illegitimate] |
Synonym |
|
WCSP |
| Trillium oostingii Gaddy |
Unresolved |
|
WCSP (in review) |
| Trillium ovatum Pursh |
Accepted |
|
WCSP |
| Trillium ovatum var. hibbersonii (T.M.C.Taylor & Szczaw.) G.W.Douglas & Pojar |
Synonym |
|
WCSP |
| Trillium ovatum f. hibbersonii T.M.C.Taylor & Szczaw. |
Accepted |
|
WCSP |
| Trillium ovatum f. maculosum Case & R.B.Case |
Synonym |
|
WCSP |
| Trillium ovatum var. oettingeri (Munz & Thorne) Case |
Accepted |
|
WCSP |
| Trillium ovatum subsp. oettingeri Munz & Thorne |
Synonym |
|
WCSP |
| Trillium ovatum var. ovatum |
Accepted |
|
WCSP |
| Trillium ovatum var. stenosepalum R.R.Gates |
Synonym |
|
WCSP |
| Trillium ozarkanum E.J.Palmer & Steyerm. |
Synonym |
|
WCSP |
| Trillium pallasii Hultén |
Synonym |
|
WCSP |
| Trillium parviflorum V.G.Soukup |
Accepted |
|
WCSP |
| Trillium pendulum Willd. |
Synonym |
|
WCSP |
| Trillium persistens W.H.Duncan |
Accepted |
|
WCSP |
| Trillium petiolatum Pursh |
Accepted |
|
WCSP |
| Trillium petiolatum f. luteum V.G.Soukup |
Synonym |
|
WCSP |
| Trillium pictum Pursh |
Synonym |
|
WCSP |
| Trillium pumilum Pursh |
Synonym |
|
WCSP |
| Trillium purpureum Elliott |
Synonym |
|
WCSP |
| Trillium pusillum Michx. |
Accepted |
|
WCSP |
| Trillium pusillum var. monticulum Bodkin & Reveal |
Synonym |
|
WCSP |
| Trillium pusillum var. ozarkanum (E.J.Palmer & Steyerm.) Steyerm. |
Synonym |
|
WCSP |
| Trillium pusillum var. pusillum |
Accepted |
|
WCSP |
| Trillium pusillum var. texanum (Buckley) Reveal & C.R.Broome |
Synonym |
|
WCSP |
| Trillium pusillum var. virginianum Fernald |
Accepted |
|
WCSP |
| Trillium rectistamineum (R.R.Gates) H.St.John |
Synonym |
|
WCSP |
| Trillium recurvatum L.C.Beck |
Accepted |
|
WCSP |
| Trillium recurvatum f. esepalum J.D.Freeman & Heineke |
Synonym |
|
WCSP |
| Trillium recurvatum f. foliosum Steyerm. |
Synonym |
|
WCSP |
| Trillium recurvatum subsp. lanceolatum (S.Watson) A.E.Murray |
Synonym |
|
WCSP |
| Trillium recurvatum var. lanceolatum S.Watson |
Synonym |
|
WCSP |
| Trillium recurvatum f. luteum Clute |
Synonym |
|
WCSP |
| Trillium recurvatum f. luteum Friesner |
Synonym |
|
WCSP |
| Trillium recurvatum f. petaloideum Steyerm. |
Synonym |
|
WCSP |
| Trillium recurvatum f. shayi E.J.Palmer & Steyerm. |
Synonym |
|
WCSP |
| Trillium reliquum J.D.Freeman |
Accepted |
|
WCSP |
| Trillium reliquum f. luteum J.D.Freeman |
Synonym |
|
WCSP |
| Trillium rhombifolium Raf. [Unplaced] |
Unresolved |
|
WCSP |
| Trillium × rhombifolium Kom. [Illegitimate] |
Synonym |
|
WCSP |
| Trillium rhomboideum Michx. |
Synonym |
|
WCSP |
| Trillium rhomboideum var. album Michx. |
Synonym |
|
WCSP |
| Trillium rhomboideum var. atropurpureum Michx. |
Synonym |
|
WCSP |
| Trillium rhomboideum var. grandiflorum Michx. |
Synonym |
|
WCSP |
| Trillium rivale S.Watson |
Accepted |
|
WCSP |
| Trillium rotundifolium Raf. |
Synonym |
|
WCSP |
| Trillium rugelii Rendle |
Accepted |
|
WCSP |
| Trillium scouleri Rydb. |
Synonym |
|
WCSP |
| Trillium sessile L. |
Accepted |
|
WCSP |
| Trillium sessile var. angustipetalum Torr. |
Synonym |
|
WCSP |
| Trillium sessile var. boreale Nutt. |
Synonym |
|
WCSP |
| Trillium sessile var. californicum S.Watson |
Synonym |
|
WCSP |
| Trillium sessile var. chloropetalum Torr. |
Synonym |
|
WCSP |
| Trillium sessile subsp. giganteum (Hook. & Arn.) A.E.Murray |
Synonym |
|
WCSP |
| Trillium sessile var. giganteum Hook. & Arn. |
Synonym |
|
WCSP |
| Trillium sessile f. luteum (Muhl.) Peattie |
Synonym |
|
WCSP |
| Trillium sessile var. luteum Muhl. |
Synonym |
|
WCSP |
| Trillium sessile var. nuttallii S.Watson |
Synonym |
|
WCSP |
| Trillium sessile var. praecox Nutt. |
Synonym |
|
WCSP |
| Trillium sessile var. viridescens (Nutt.) Trel. |
Synonym |
|
WCSP |
| Trillium sessile f. viridiflorum Beyer |
Synonym |
|
WCSP |
| Trillium sessile var. wrayi S.Watson |
Synonym |
|
WCSP |
| Trillium simile Gleason |
Accepted |
|
WCSP |
| Trillium smallii Maxim. |
Accepted |
|
WCSP |
| Trillium smallii var. maximowiczii Miyabe & Kudo |
Synonym |
|
WCSP |
| Trillium spatulatum Raf. |
Synonym |
|
WCSP |
| Trillium stamineum Harb. |
Accepted |
|
WCSP |
| Trillium stamineum f. luteum J.D.Freeman |
Synonym |
|
WCSP |
| Trillium stenanthes Raf. |
Synonym |
|
WCSP |
| Trillium stylosum Nutt. |
Synonym |
|
WCSP |
| Trillium sulcatum T.S.Patrick |
Accepted |
|
WCSP |
| Trillium sulcatum f. albolutescens T.S.Patrick |
Synonym |
|
WCSP |
| Trillium taiwanense S.S.Ying |
Accepted |
|
WCSP |
| Trillium texanum Buckley |
Synonym |
|
WCSP |
| Trillium tinctorium Raf. |
Synonym |
|
WCSP |
| Trillium tschonoskii Maxim. |
Accepted |
|
WCSP |
| Trillium tschonoskii var. cryptopetalum Makino |
Synonym |
|
WCSP |
| Trillium tschonoskii var. himalaicum H.Hara |
Synonym |
|
WCSP |
| Trillium tschonoskii f. morii (Hayata) Yamam. |
Synonym |
|
WCSP |
| Trillium tschonoskii var. morii (Hayata) Masam. |
Synonym |
|
TRO |
| Trillium tschonoskii f. violaceum Makino |
Synonym |
|
WCSP |
| Trillium underwoodii Small |
Accepted |
|
WCSP |
| Trillium underwoodii var. luteum (Muhl.) J.F.Macbr. |
Synonym |
|
WCSP |
| Trillium undulatum Willd. |
Accepted |
|
WCSP |
| Trillium undulatum f. cleavelandicum (Alph.Wood) Fernald |
Synonym |
|
WCSP |
| Trillium undulatum f. enotatum T.S.Patrick |
Synonym |
|
WCSP |
| Trillium undulatum f. polymerum Vict. ex Louis-Marie |
Synonym |
|
WCSP |
| Trillium undulatum f. striatum Louis-Marie |
Synonym |
|
WCSP |
| Trillium unguiculatum Raf. |
Synonym |
|
WCSP |
| Trillium unguiculatum Nutt. [Illegitimate] |
Synonym |
|
WCSP |
| Trillium vaseyi Harb. |
Accepted |
|
WCSP |
| Trillium vaseyi f. album House |
Synonym |
|
WCSP |
| Trillium vaseyi var. simile (Gleason) Barksd. |
Synonym |
|
WCSP |
| Trillium venosum R.R.Gates |
Synonym |
|
WCSP |
| Trillium virginianum (Fernald) C.F.Reed |
Synonym |
|
WCSP |
| Trillium viride L.C.Beck |
Accepted |
|
WCSP |
| Trillium viride var. luteum (Muhl.) Gleason |
Synonym |
|
WCSP |
| Trillium viridescens Nutt. |
Accepted |
|
WCSP |
| Trillium × yezoense Tatew. ex J.Samej. |
Accepted |
|
WCSP |
| Trillium yezoense var. atropurpureocarpum J.Samej. |
Synonym |
|
WCSP |
