Trillium rhombifolium Raf. species doubtful

Trillium govanianum Wall. species doubtful

Trillium viride var. viride variety synonym

Trillium unguiculatum Nutt. species synonym

Trillium grandiflorum var. macropetalum Regel variety synonym

Trillium lanceolatum (S.Watson) Boykin ex Small species synonym

Trillium tschonoskii var. morii (Hayata) Masam. variety synonym

Trillidium undulatum (Willd.) Floden & E.E.Schill. species synonym

Trillium georgianum S.B.Farmer species accepted

Trillium delicatum Floden & E.E.Schill. species accepted

Trillium monticola (Bodkin & Reveal) S.B.Farmer species synonym

Trillium erectum subsp. fma L. subspecies synonym

Trillium hugeri Raf. species synonym

Trillium palustris S.B.Farmer species synonym

Trillium pusillum var. kentuckianum Jacobs & Jacobs variety synonym

Trillium pusillum Pursh species doubtful

Trillium pusillum var. georgianum Michaux. variety synonym

Trillium telmacola S.B.Farmer species synonym

Trillium alabamicum J.G.Garrett species homotypic synonym

Trillium carolinianum S.B.Farmer species synonym

Trillium hibbersonii (T.M.C.Taylor & Szczaw.) D.O'Neill & S.B.Farmer species accepted

Trillium alabamicum J.G.Garrett ex S.B.Farmer species synonym

Trillium decpiens J.D.Freeman species synonym

Trillium camschatcense KerGawl. species doubtful

Trillium tschonoskii subsp. atrorubens subspecies synonym

Trillium grandiflorum f. polymerum Vict. form synonym

Trillium grandiflorum f. viride Farw. form synonym

Trillium recurvatum var. lanceolatum S.Watson variety synonym

Trillium ×miyabeanum var. atropurpureocarpum J.Samej. variety synonym

Trillium apetalon f. tripetalum J.Samej. form synonym

Trillium apetalon var. viridipurpureocarpum (Makino) J.Samej. variety synonym

Trillium smallii f. viridipurpureocarpum (Makino) Honda form synonym

Trillium apetalon var. rubrocarpum J.Samej. variety synonym

Trillium apetalon f. album J.Samej. form synonym

Trillium apetalon var. atropurpureocarpum (Makino) J.Samej. variety synonym

Trillium smallii f. atropurpureocarpum (Makino) Honda form synonym

Trillium smallii f. viridicarpum (Makino) Honda form synonym

Trillium ovatum var. hibbersonii (T.M.C.Taylor & Szczaw.) G.W.Douglas & Pojar variety synonym

Trillium smallii var. atropurpureocarpum J.Samej. variety synonym

Trillium kamtschaticum var. rhombifolium A.E.Murray variety synonym

Trillium sessile f. luteum (Muhl.) Peattie form synonym

Trillium tschonoskii f. cryptopetalum (Makino) J.Samej. form synonym

Trillium tschonoskii var. atrorubens Miyabe & Tatew. variety synonym

Trillium cuneatum var. luteum (Muhl.) H.E.Ahles variety synonym

Trillium cernuum var. cernuum variety synonym

Trillium grandiflorum f. grandiflorum form synonym

Trillium undulatum f. undulatum form synonym

Trillium recurvatum f. recurvatum form synonym

Trillium erythrocarpum Curtis species heterotypic synonym

Trillium camschatcense subsp. tschonoskii (Maxim.) Vorosch. subspecies synonym

Trillium tschonoskii subsp. violaceum Makino subspecies synonym

Trillium tschonoskii subsp. morii (Hayata) Yamam. subspecies synonym

Trillium lirioides f. vegetum Farw. form synonym

Trillium tschonoskii subsp. himalaicum H.Hara subspecies synonym

Trillium tschonoskii subsp. cryptopetalum Makino subspecies synonym

Trillium catesbaei Elliott species accepted

Trillium stylosum Nutt. species synonym

Trillium declinatum Gleason species heterotypic synonym

Delostylis cernuum Raf. species synonym

Trillium affine Rendle species synonym

Trillium balduinianum Raf. species synonym

Trillium nervosum Elliott species synonym

Delostylis stylosum (Nutt.) Raf. species synonym

Trillium foetidissimum J.D.Freeman species accepted

Trillium foetidissimum f. luteum J.D.Freeman form synonym

Trillium ×hagae Miyabe & Tatew. species accepted

Trillium cernuum L. species accepted

Trillium cernuum f. marginatum Cay. & J.Cay. form synonym

Trillium cernuum f. billingtonii Farw. form synonym

Trillium cernuum var. declinatum Farw. variety synonym

Trillium cernuum f. tangerae Wherry form synonym

Trillium cernuum f. viride Cay. & J.Cay. form synonym

Trillium latifolium Raf. species synonym

Trillium medium Raf. species synonym

Trillium cernuum var. terrae-novae B.Boivin variety synonym

Trillium cernuum var. typicum Wherry variety synonym

Trillium cernuum f. walpolei Farw. form synonym

Trillium glaucum Raf. species synonym

Trillium hamosum Raf. species synonym

Trillium cernuum var. macranthum Eames & Wiegand variety synonym

Trillium pusillum Michx. species accepted

Trillium ×komarovii H.Nakai & Koji Ito species accepted

Trillium kamtschaticum subsp. rhombifolium A.E.Murray subspecies synonym

Trillium ×rhombifolium Kom. species synonym

Trillium sessile L. species accepted

Trillium sessile f. viridiflorum Beyer form synonym

Trillium isanthum Raf. species synonym

Phyllantherum sessile (L.) Nieuwl. species synonym

Trillium longiflorum Raf. species synonym

Trillium sessile var. boreale Nutt. variety synonym

Trillium membranaceum Raf. species synonym

Trillium rotundifolium Raf. species synonym

Trillium tinctorium Raf. species synonym

Esdra sessilis (L.) Salisb. species synonym

Trillium lancifolium Raf. species accepted

Trillium lanceolatum Boykin ex S.Watson species synonym

Trillium ludovicianum Harb. species accepted

Trillium tschonoskii Maxim. species accepted

Trillium tschonoskii f. morii (Hayata) Yamam. form synonym

Trillium tschonoskii var. cryptopetalum Makino variety synonym

Trillium morii Hayata species synonym

Trillium tschonoskii var. himalaicum H.Hara variety synonym

Trillium tschonoskii f. violaceum Makino form synonym

Trillium camschatcense var. tschonoskii (Maxim.) Vorosch. variety synonym

Trillium vaseyi Harb. species accepted

Trillium erectum var. vaseyi (Harb.) H.E.Ahles variety synonym

Trillium vaseyi f. album House form synonym

Trillium cuneatum Raf. species accepted

Trillium cuneatum f. luteum J.D.Freeman form synonym

Trillium sessile var. praecox Nutt. variety synonym

Trillium hugeri Small species synonym

Trillium govanianum Wall. ex D.Don species accepted

Trillidium govanianum (Wall. ex D.Don) Kunth species synonym

Trillium simile Gleason species accepted

Trillium vaseyi var. simile (Gleason) Barksd. variety synonym

Trillium erectum f. simile (Gleason) H.E.Ahles form synonym

Trillium taiwanense S.S.Ying species accepted

Trillium amabile Miyabe & Tatew. species synonym

Trillium viride L.C.Beck species accepted

Trillium albidum J.D.Freeman species accepted

Trillium recurvatum L.C.Beck species accepted

Trillium recurvatum f. shayi E.J.Palmer & Steyerm. form synonym

Trillium recurvatum f. foliosum Steyerm. form synonym

Trillium unguiculatum Raf. species synonym

Trillium recurvatum f. luteum Friesner form synonym

Trillium recurvatum f. esepalum J.D.Freeman & Heineke form synonym

Phyllantherum recurvatum (L.C.Beck) Nieuwl. species synonym

Trillium recurvatum f. petaloideum Steyerm. form synonym

Trillium decipiens J.D.Freeman species accepted

Trillium gracile J.D.Freeman species accepted

Trillium gracile f. luteum J.D.Freeman form synonym

Trillium channellii Fukuda, J.D.Freeman & Itou species accepted

Trillium discolor Hook. species accepted

Trillium luteum var. latipetalum R.R.Gates variety synonym

Trillium sessile var. wrayi S.Watson variety synonym

Trillium persistens W.H.Duncan species accepted

Trillium ×crockerianum Halda species doubtful

Trillium ×klineanum Halda species synonym

Trillium sulcatum T.S.Patrick species accepted

Trillium sulcatum f. albolutescens T.S.Patrick form synonym

Trillium ×miyabeanum Tatew. ex J.Samej. species accepted

Trillium ×miyabeanum f. albiflorum V.G.Soukup form synonym

Trillium grandiflorum (Michx.) Salisb. species accepted

Trillium grandiflorum f. petalosum Louis-Marie form synonym

Trillium lirioides f. ungulatum Farw. form synonym

Trillium obcordatum Raf. species synonym

Trillium grandiflorum f. elongatum Louis-Marie form synonym

Trillium grandiflorum var. minimum N.Coleman variety synonym

Trillium grandiflorum f. striatum Louis-Marie form synonym

Trillium lirioides f. albomarginatum Farw. form synonym

Trillium chandleri f. gladewitzii Farw. form synonym

Trillium lirioides f. variegatum Farw. form synonym

Trillium chandleri f. palaceum Farw. form synonym

Trillium grandiflorum f. divisum Louis-Marie form synonym

Trillium chandleri f. subulatum Farw. form synonym

Trillium grandiflorum f. regressum Louis-Marie form synonym

Trillium rhomboideum var. grandiflorum Michx. variety synonym

Trillium lirioides f. giganteum Farw. form synonym

Trillium chandleri f. plenum Farw. form synonym

Trillium erythrocarpum Michx. species heterotypic synonym

Trillium liroides f. vegetum Farw. form synonym

Trillium chandleri f. foliaceum Farw. form synonym

Trillium grandiflorum f. dimerum Louis-Marie form synonym

Trillium lirioides Raf. species synonym

Trillium chandleri Farw. species synonym

Trillium lirioides f. subsessile Farw. form synonym

Trillium scouleri Rydb. species synonym

Trillium lirioides var. longipetiolatum Farw. variety synonym

Trillium smallii Maxim. species accepted

Trillium smallii var. maximowiczii Miyabe & Kudô variety synonym

Trillium apetalon f. viridipurpureocarpum Makino form synonym

Trillium apetalon Makino species accepted

Trillium apetalon f. viridicarpum Makino form synonym

Trillium apetalon f. atropurpureocarpum Makino form synonym

Trillium angustipetalum (Torr.) J.D.Freeman species accepted

Trillium giganteum var. angustipetalum (Torr.) R.R.Gates variety synonym

Trillium sessile var. angustipetalum Torr. variety synonym

Trillium chloropetalum var. angustipetalum (Torr.) Munz variety synonym

Trillium petiolatum Pursh species accepted

Trillium petiolatum f. luteum V.G.Soukup form synonym

Trillium viridescens Nutt. species accepted

Trillium sessile var. viridescens (Nutt.) Trel. variety synonym

Trillium sessile var. nuttallii S.Watson variety synonym

Trillium stenanthes Raf. species synonym

Trillium underwoodii Small species accepted

Trillium lanceolatum var. rectistamineum R.R.Gates variety synonym

Trillium rectistamineum (R.R.Gates) H.St.John species synonym

Trillium maculatum Raf. species accepted

Trillium maculatum f. luteum J.D.Freeman form synonym

Trillium maculatum f. simulans J.D.Freeman form synonym

Trillium ×yezoense Tatew. ex J.Samej. species accepted

Trillium ×yezoense var. atropurpureocarpum J.Samej. variety synonym

Trillium undulatum Willd. species accepted

Trillium undulatum f. enotatum T.S.Patrick form synonym

Trillium undulatum f. polymerum Vict. ex Louis-Marie form synonym

Trillium undulatum f. cleavelandicum (Alph.Wood) Fernald form synonym

Trillium cleavelandicum Alph.Wood species synonym

Trillium pictum Pursh species synonym

Trillium undulatum f. striatum Louis-Marie form synonym

Trillium erectum L. species accepted

Trillium chloropetalum (Torr.) Howell species accepted

Trillium sessile var. chloropetalum Torr. variety synonym

Trillium giganteum var. chloropetalum (Torr.) R.R.Gates variety synonym

Trillium rugelii Rendle species accepted

Trillium kurabayashii J.D.Freeman species accepted

Trillium kurabayashii f. luteum V.G.Soukup form synonym

Trillium stamineum Harb. species accepted

Trillium stamineum f. luteum J.D.Freeman form synonym

Trillium reliquum J.D.Freeman species accepted

Trillium reliquum f. luteum J.D.Freeman form synonym

Trillium camschatcense Ker Gawl. species accepted

Trillium camschatcense f. plenum (J.Samej.) H.Nakai & Koji Ito form synonym

Trillium kamtschaticum Pall. ex Pursh species synonym

Trillium camschatcense f. violaceum (Miyabe & Tatew.) H.Nakai & Koji Ito form synonym

Trillium kamtschatikum Ledeb. species synonym

Trillium kamtschaticum var. kurilense Tatew. variety synonym

Trillium kamtschaticum var. soyanum J.Samej. variety synonym

Trillium erectum var. japonicum A.Gray variety synonym

Trillium pallasii Hultén species synonym

Trillium camschatcense var. kurilense (Tatew.) H.Nakai & Koji Ito variety synonym

Trillium kamtschaticum f. plenum J.Samej. form synonym

Trillium kamtschaticum f. violaceum Miyabe & Tatew. form synonym

Trillium camschatcense f. polyphyllum (J.Samej.) H.Nakai & Koji Ito form synonym

Trillium camschatcense var. soyanum (J.Samej.) H.Nakai & Koji Ito variety synonym

Trillium kamtschaticum f. polyphyllum J.Samej. form synonym

Trillium decumbens Harb. species accepted

Trillium luteum (Muhl.) Harb. species accepted

Trillium hugeri f. flavum Peattie form synonym

Trillium sessile var. luteum Muhl. variety synonym

Trillium viride var. luteum (Muhl.) Gleason variety synonym

Trillium underwoodii var. luteum (Muhl.) J.F.Macbr. variety synonym

Trillium ovatum Pursh species accepted

Trillium crassifolium Piper species accepted

Trillium ovatum f. hibbersonii T.M.C.Taylor & Szczaw. form synonym

Trillium flexipes Raf. species accepted

Trillium gleasonii Fernald species synonym

Trillium declinatum f. walpolei Friesner form synonym

Trillium nivale Riddell species accepted

Trillium cernuum Barton, 1821 species doubtful

Trillium cuneatum var. cuneatum variety synonym

Trillium recurvatum f. luteum Clute form synonym

Trillium roseum hort. species homotypic synonym

Trillium reflexum Clute, 1922 species accepted

Trillium oostingii Gaddy species accepted

Trillium grandiflorum var. variegatum E.F.Sm. variety synonym

Trillium grandiflorum f. roseum Farw. form synonym

Trillium grandiflorum f. lirioides (Raf.) Vict. form synonym

Trillium grandiflorum f. chandleri (Farw.) Vict. form synonym

Trillium rectum D.Dietr. species accepted

Trillium camtschaticum Pall. ex Pursh species synonym

Trillium divaricatum Raf. species doubtful

Trillium brevipetalum Raf. species doubtful

Trillium brevipes Raf. species doubtful

Trillium ×crockeranum Halda, 1999 species accepted

Trillium flexipes f. walpolei (Farw.) Fernald form synonym

Trillium amblopsis Raf. species doubtful

Trillium erythrocarpum var. cleavelandicum Alph.Wood variety synonym

Trillium roseum hort. ex Steud. species accepted

Trillium declinatum Raf. species heterotypic synonym

Trillium cernuum Michx., 1803 species doubtful

Trillium flexipes f. flexipes form synonym

Trillium recurvatum subsp. lanceolatum (S.Watson) A.E.Murray subspecies synonym

Trillium kamtschaticum Pall. ex Miyabe species accepted

Trillium erectum f. erectum form synonym

Trillium cernuum f. lalondei Cay. & J.Cay. form synonym

Trillium undulatum f. polymerum Vict. form homotypic synonym

Trillium tennesseense E.E.Schill. & Floden species synonym

Trillium erectum Stell. species doubtful

Trillium cernuum f. cernuum form synonym

Trillium yezoense Tatew. species doubtful

Trillium sessile f. sessile form synonym

Trillium kamtschaticum Pall. species homotypic synonym

Trillium lanceolatum Boykin species homotypic synonym

Trillium camtschaticum Pall. species homotypic synonym

Trillium ×miyabeanum Tatew. species homotypic synonym

Trillium pusillum var. monticola Bodkin & Reveal variety synonym

Trillium scouleri Rydb. ex Gleason species accepted