Populus ×timiriasevii Jourbin species accepted Populus ×candicans var. rasumowskiana R.I.Schröd. variety homotypic synonym Populus alba var. pendula Loudon variety synonym Populus tremuloides f. reniformis Tidestr. form synonym Populus usbekistanica subsp. tadishistanica Bunge subspecies synonym Populus balsamifera var. hortensis Hylander variety synonym Populus alba f. nivea (Aiton) C.K.Schneid. form synonym Populus ×canescens f. pendula Dippel form synonym Populus ×hybrida subsp. berolinensis Schröd. ex Regel subspecies synonym Populus tremuloides var. pendula (Tausch) H.Jaeger variety synonym Populus tremula f. pilosa (Nakai) Sugim. form synonym Populus ×canadensis var. aurea-vangeertii (André) Dippel variety synonym Populus lindleyana Carrière species synonym Populus balsamifera var. intermedia Loudon variety synonym Populus alba f. globosa Dippel form synonym Populus ×canadensis f. robusta Simon-Louis form homotypic synonym Populus ×candicans var. rasumowskiana R.I.Schröd. ex Regel variety synonym Populus ×canadensis subsp. brabantica Houtz. subspecies synonym Populus alba f. richardii Beissn. form synonym Populus ×canadensis var. eugenei (Simon-Louis ex L.Mathieu) Rehder variety synonym Populus euphratensis Anon. species synonym Populus usbekistanica subsp. tadshikistanica Bunge subspecies synonym Populus benzoifera var. pendula Tausch variety synonym Populus alba var. acerifolia Loudon variety synonym Populus ×canescens var. intermedia Mérat variety synonym Populus girinensis var. ivaschkevitchii Skvortsov variety synonym Populus nivea subsp. salomonii Carrière subspecies synonym Populus balsamifera var. elongata (Dippel) Hylander variety synonym Populus alba var. salomonii (Carrière) Wesm. variety synonym Populus ×canadensis subsp. aurea-vangeertii André subspecies synonym Populus ×canadensis f. aureovariegata Schwer. form synonym Populus tremula var. villosa (Láng) Wesm. variety synonym Populus ×canadensis f. brabantica Houtz. form synonym Populus ×hybrida subsp. berolinensis Schröd. subspecies homotypic synonym Populus laurifolia f. lindleyana (Carrière) Rehder form synonym Populus angustifolia Weinm. ex Ledeb. species synonym Populus balsamifera x deltoides species synonym Populus laurifolia × nigra 'Italica' species synonym Populus laurifolia x nigra var. italica species accepted Populus alba x tremula species accepted Populus balsamifera × deltoides species synonym Populus luziarum A.Vázquez, Muñiz-Castro & Padilla-Lepe species accepted Populus tremula x tremuloides species synonym Populus deltoides × nigra species synonym Populus deltoides × trichocarpa species synonym Populus maximowiczii x trichocarpa species accepted Populus laurifolia x nigra 'Italica' species synonym Populus yatungensis var. trichorachis Z.Wang & S.L.Tung variety synonym Populus ×tomentiglandulosa T.B.Lee ex M.Kim species accepted Populus balsamifera var. latifolia Loudon variety synonym Populus trinervifolia Doweld species accepted Populus ×odorata R.I.Schröd. ex Wolkenst. species accepted Populus ×nevensis Nasim. species accepted Populus hervieriana Dode, 1905 species accepted Populus ×petrovskoe-rasumovskoe R.I.Schröd. ex Wolkenst. species accepted Populus ×catherinae R.I.Schröd. species doubtful Populus ×rasumovskoe R.I.Schröd. ex Wolkenst. species accepted Populus neimongolica Doweld species accepted Populus balsamifera var. viminalis Loudon variety synonym Populus hastifolia Doweld species accepted Populus puschkinii R.I.Schröd. species doubtful Populus ×petrovskoe R.I.Schröd. ex Wolkenst. species accepted Populus okuboi Kitag., 1939 species accepted Populus ×moscoviensis R.I.Schröd. ex Wolkenst. species doubtful Populus ×rasumovskoe R.I.Schröd. species homotypic synonym Populus xgileadensis Rouleau species synonym Populus ×tomentiglandulosa T.B.Lee species doubtful Populus xjackii Sarg. species synonym Populus tremula subsp. microtremula Grossh. subspecies synonym Populus serrata T.B.Chao & J.S.Chen species synonym Populus ×canadensis subsp. gelrica Houtz. subspecies synonym Populus candicans var. elongata Dippel variety synonym Populus ×petrovskoe R.I.Schröd. species homotypic synonym Populus pubescens f. carreiriana (Dode) Jovan. & Tucović form synonym Populus alba f. pendula (Loudon) Dippel form synonym Populus balsamifera var. gileadensis (Rouleau) variety synonym Populus euphratica subsp. pruinosa (Schrenk) Nevski subspecies synonym Populus xcandicans Aiton species synonym Populus bolleana Carrière, 1881 species accepted Populus ×petrovskoe-rasumovskoe R.I.Schröd. species homotypic synonym Populus ×canadensis var. robusta (Simon-Louis ex Schelle) Hyl. variety synonym Populus dentifolia Kirwan species doubtful Populus suaveolens Fisch. ex Camuzet, 1829 species doubtful Populus ×nevensis Bogdanov species synonym Popululs padensis J.Gordon, Dermer & R.Edmonds species synonym Populus balsamifera subsp. californica S.Watson subspecies synonym Populus pubescens f. mulleriana (Dode) Jovan. & Tucovic form synonym Populus songarica Mscr. species accepted Populus roegneriana Anonymus species accepted Populus butuoensis Anonymus species accepted Populus douglasae Buechler et al., 2007 species accepted Populus balsamifera L. species accepted Populus ×canescens (Aiton) Sm. species accepted Populus alba var. canescens Aiton variety synonym Populus hybrida M.Bieb. species synonym Populus ×heimburgeri B.Boivin species accepted Populus ×hinckleyana Correll species accepted Populus ×parryi Sarg. species accepted Populus ×smithii B.Boivin species accepted Populus ×barnesii W.H.Wagner species synonym Populus ×acuminata Rydb. species accepted Populus acuminata var. rehderi Sarg. variety proparte synonym Populus ×tomentosa Carrière species accepted Populus angustifolia E.James species accepted Populus tweedyi Britton species synonym Populus balsamifera var. angustifolia (E.James) S.Watson variety synonym Populus ×canadensis var. angustifolia (E.James) Wesm. variety synonym Populus ×sennii B.Boivin species synonym Populus fortissima A.Nelson & J.F.Macbr. species synonym Populus balsamifera var. augustifolia (E.James) S.Watson variety synonym Populus salicifolia Raf. species proparte synonym Populus ×rouleauiana B.Boivin species accepted Populus canadensis Castigl. species heterotypic synonym Populus canadensis var. eugenei (Simon-Louis) Schelle variety synonym Populus euramericana (Dode) Guinier species synonym Populus ×canadensis var. serotina (Hartig) Rehder variety synonym Populus ×eugenei Simon-Louis species proparte synonym Populus grandidentata Michx. species accepted Populus grandidentata var. subcordata Vict. variety synonym Populus grandidentata var. meridionalis Tidestr. variety synonym Populus grandidentata var. angustata Vict. variety synonym Populus ×rouleauana B.Boivin species accepted Populus tremuloides Michx. species accepted Populus polygonifolia F.G.Bernard species synonym Populus tremuloides var. vancouveriana (Trel.) Sarg. variety synonym Populus tremuloides var. intermedia Vict. variety synonym Populus tremuloides var. aurea (Tidestr.) Daniels variety synonym Populus tremula subsp. tremuloides (Michx.) Á.Löve & D.Löve subspecies synonym Populus cercidiphylla Britton species synonym Populus tremuloides var. rhomboidea Vict. variety synonym Populus tremuloides var. cercidiphylla (Britton) Sudw. variety synonym Populus vancouveriana Trel. species synonym Populus aurea Tidestr. species synonym Populus tremuloides var. magnifica Vict. variety synonym Populus nigra L. species accepted Populus nigra var. italica DuRoi variety synonym Populus simonii Carrière species accepted Populus deltoides W.Bartram ex Marshall species accepted Populus alba L. species accepted Populus alba var. bolleana Lauche variety synonym Populus alba var. pyramidalis Bunge variety synonym Populus ×brayshawii B.Boivin species accepted Populus fremontii S.Watson species accepted Populus ×berolinensis Dippel species synonym Populus heterophylla L. species accepted Populus argentea F.Michx. species synonym Populus ×jackii Sarg. species accepted Populus ×gileadensis Rouleau species synonym Populus ×bernardii B.Boivin species synonym Populus ×manitobensis Dode species synonym Populus ×generosa A.Henry species synonym Populus ×andrewsii Sarg. species synonym Populus ×dutillyi Lepage species synonym Populus ×inopina Eckenw. species accepted Populus tremula L. species accepted Populus mauritanica Dode species synonym Populus arembergica Lodd. ex Loudon species synonym Populus manshurica Nakai species synonym Populus mandschurica Nakai species accepted Populus major Mill. species synonym Populus mainlingensis Z.Wang & S.L.Tung species accepted Populus macrophylla Lindl. species heterotypic synonym Populus macrocarpa (Schrenk) Pavlov & Lipsch. ex Pavlov species accepted Balsamiflua illicitana (Dode) Kimura species synonym Populus macranthela H.Lév. & Vaniot species synonym Populus longifolia Fisch. ex Loudon species synonym Populus ×lloydii Henry species doubtful Populus litwinowiana Dode species synonym Populus lindleyana Booth ex Loudon species heterotypic synonym Populus ×leucophylla Schur species doubtful Populus lepida Dode species doubtful Populus laurifolia Ledeb. species accepted Populus latifolia Moench species synonym Populus ×laticoma Dode species doubtful Populus lasiocarpa var. yiliangensis N.Chao & J.Liu variety synonym Populus lasiocarpa var. psiloclada N.Chao & J.Liu variety synonym Populus lasiocarpa var. longiamenta P.I.Mao & P.X.He variety synonym Populus lancifolia N.Chao species synonym Populus ×krauseana Dode species synonym Populus keerqinensis T.Y.Sun species accepted Populus kanjilaliana Dode species synonym Populus kangdingensis var. tibetica (C.K.Schneid.) N.Chao & J.Liu variety synonym Populus kangdingensis var. schneideri (Rehder) N.Chao & J.Liu variety synonym Populus kangdingensis var. lancifolia (N.Chao) N.Chao & J.Liu variety synonym Populus ×juliana-pendula Dippel species synonym Populus jesoensis Nakai species synonym Populus jacquemontiana var. glauca (Haines) Kimura variety synonym Populus ×irishiana Dode species doubtful Populus intramongolica T.Y.Sun & E.W.Ma species accepted Populus intermedia Mert. ex Loudon species synonym Populus ×intercurrens Goodrich & S.L.Welsh species synonym Octima ×canescens (Sm.) Raf. species synonym Populus incrassata Dode species doubtful Populus illicitana Dode ex Goerz species synonym Populus iliensis Drobow species synonym Populus ilicifolia (Engl.) Rouleau species accepted Populus hypomelaena Dode species doubtful Populus yunungii G.L.Lu species doubtful Populus yunsiaoshanensis T.B.Chao & C.W.Chiuan species doubtful Populus yunsiaomanshanensis T.B.Chao & C.W.Chiuan species doubtful Populus yunnanensis var. pedicellata Z.Wang & S.L.Tung variety synonym Populus ×yuana Z.Wang & S.L.Tung species accepted Populus yatungensis var. pedicellata (Z.Wang & S.L.Tung) P.I Mao variety synonym Populus ×hopeiensis var. pulverulenta S.Y.Ma, D.S.Yao & X.C.Chen variety synonym Populus ×hopeiensis var. pendula T.B.Chao variety synonym Populus ×hopeiensis var. ovatifolia T.B.Chao variety synonym Populus ×hopeiensis var. flavida T.B.Chao & C.W.Chiuan variety synonym Populus honanensis var. cordata T.B.Chao variety synonym Populus ×xiaohei T.S.Hwang & Y.Liang species accepted Populus xiangchengensis Z.Wang & S.L.Tung species accepted Populus hobartiana Dode species doubtful Populus wulianensis S.B.Liang & X.W.Li species synonym Populus hispida Hausskn. & Sint. species synonym Populus wuana Z.Wang & S.L.Tung species accepted Populus wolfiana Dode species doubtful Populus hickeliana Dode species synonym Populus wolfgangii Janch. species doubtful Populus heterophylla var. argentea Andersson variety synonym Populus wobstii R.I.Schröd. ex Dippel species synonym Populus wilsonii f. pedicellata Z.Wang & S.L.Tung form synonym Populus wilsonii var. lasioclada N.Chao variety synonym Populus heterophilla Foug. species synonym Populus wilsonii f. brevipetiolata Z.Wang & S.L.Tung form synonym Populus heteroloba Dode species doubtful Populus hervierana Dode species doubtful Populus ×wilsocarpa S.Bartkowiak & W.Bugaa species doubtful Populus henryana Dode species doubtful Populus ×wettsteinii Janch. species accepted Populus wenxianica Z.C.Feng & J.L.Guo species doubtful Populus ×hastata Dode species accepted Populus schneideri var. tibetica (C.K.Schneid.) N.Chao variety synonym Populus schroederiana Dode species doubtful Populus guzmanantlensis A.Vázquez & Cuevas species accepted Populus violascens Dode species synonym Populus viminea Wesm. species heterotypic synonym Populus grisea Lodd. ex Loudon species synonym Populus grandifolia Wesm. species synonym Populus viminalis Lodd. ex Loudon species heterotypic synonym Populus grandidentata f. septentrionalis Tidestr. form synonym Populus villosa Láng species synonym Populus grandidentata f. coelestina Tidestr. form synonym Populus ×vemirubens Henry species doubtful Populus ×vegeta Dode species doubtful Populus graeca Aiton species synonym Populus globosa Dode species doubtful Populus ×glaucicomans Dode species synonym Populus valida Dode species doubtful Populus glauca Haines species accepted Populus vaillantiana Dode species synonym Populus tschoudiana Dode species doubtful Populus ×glabrata Dode species synonym Populus tristis Fisch. species synonym Populus girinensis A.K.Skvortsov species accepted Populus ×gelrica (Houtz.) Houtz. species synonym Populus trichocarpa var. ingrata (Jeps.) Jeps. variety synonym Populus gamblei var. qiongdaoensis (T.Hong & P.Luo) N.Chao & J.K.Liu variety synonym Populus gallica Dode species doubtful Populus funiushanensis T.B.Chao species doubtful Balsamiflua pruinosa (Schrenk) Kimura species synonym Populus trichocarpa var. cupulata S.Watson variety synonym Populus ×triangularis Dode species doubtful Populus treyviana Dode species doubtful Populus trepida Willd. species synonym Balsamiflua litwinowiana (Dode) Kimura species synonym Balsamiflua ilicifolia (Engl.) Kimura species synonym Populus tremuloides var. sieboldii (Miq.) Schelle variety synonym Balsamiflua ×glaucicomans (Dode) Kimura species synonym Balsamiflua euphratica f. pruinosa (Schrenk) N.Chao & Y.Liu form synonym Populus tremuloides var. reniformis Tidestr. variety synonym Balsamiflua diversifolia (Schrenk) Kimura species synonym Populus tremuloides f. nana Cockerell form synonym Balsamiflua denhardtiorum (Engl.) Kimura species synonym Populus tremuloides f. minor Cockerell form synonym Balsamiflua deltoides Griff. species synonym Balsamiflua bonnetiana (Dode) Kimura species synonym Balsamiflua ariana (Dode) Kimura species synonym Populus tremuloides var. davisiana Tidestr. variety synonym Populus ×fredroviensis Wróbl. species synonym Populus tremuloides f. betuloides J.Rousseau form synonym Populus floccosa Dode species doubtful Populus tremuliformis G.B.Emers. species synonym Populus tremula f. umbraculifera T.Bunusevac & S.Jovanovic form synonym Populus fargesii Franch. species doubtful Populus tremula var. sieboldii (Miq.) H.Ohashi variety synonym Populus tremula f. sallensis Hämet-Ahti form synonym Populus tremula f. rthensis T.Bunusevac & S.Jovanovic form synonym Populus excelsa Salisb. species synonym Populus tremula f. parvifolia Kuvaev form synonym Populus euxylon Dode species doubtful Populus tremula subsp. grandidentata (Michx.) Á.Löve & D.Löve subspecies synonym Populus europaea Dode species doubtful Populus tremula f. flagelliformis Karhu form synonym Populus euphratica Olivier species accepted Populus euphratensis Lindl., 1849 species accepted Aigiros balsamifera (L.) Lunell species synonym Populus trabutiana Dode species doubtful Populus ×tomentosa f. yixianensis H.M.Jiang & J.X.Huang form synonym Populus ×utilis Dode species doubtful Populus epirotica Dode species doubtful Populus ×tomentosa var. truncata Y.C.Fu & C.H.Wang variety synonym Populus elongata Dode species doubtful Populus ×tomentosa var. stellaribracteata Z.Y.Yu & T.Z.Zhang variety synonym Aigeiros heterophylla (L.) Jackson species homotypic synonym Populus ×tomentosa var. ramosissima Yu Nung variety synonym Aigeiros deltoides (W.Bartram ex Marshall) Tidestr. species synonym Populus ×tomentosa var. pyramidalis Shanling variety synonym Populus ×tomentosa var. palmatibracteata Z.Y.Yu & T.Z.Zhang variety synonym Populus ×tomentosa var. orbiculata Z.Y.Yu & T.Z.Zhang variety synonym Aigeiros balsamifera (L.) Lunell, 1916 species homotypic synonym Populus ×tomentosa var. multilenticellia Yu Nung variety synonym Populus dubia E.H.L.Krause species doubtful Populus ×tomentosa var. microphylla Yu Nung variety synonym Populus dodei Sennen species doubtful Populus ×tomentosa f. longipetiola T.B.Chao & J.W.Liu form synonym Populus diversifolia Schrenk species synonym Populus ×tomentosa var. longibracteata Z.Y.Yu & T.Z.Zhang variety synonym Populus ×tomentosa f. lerigata T.B.Chao & Z.X.Chen form synonym Populus ×tomentosa var. hopeinica Yu Nung variety synonym Populus ×tomentosa var. honanica Yu Nung variety synonym Populus densa Kom. species synonym Populus ×tomentosa var. ferruginea Z.Y.Yu & T.Z.Zhang variety synonym Populus denhardtiorum Dode species synonym Populus ×tomentosa f. fastigiata Y.X.Wang form synonym Populus ×tomentosa f. deltatifolia T.B.Chao & Z.X.Chen form synonym Populus ×tomentosa f. cordiconeifolia T.B.Chao & J.W.Liu form synonym Populus ×tomentosa var. borealosinensis Yu Nung variety synonym Populus ×tianschanica Tkatsch. species synonym Populus thracia Dode species doubtful Populus talassica var. tomortensis Chang Y.Yang variety synonym Populus talassica var. cordata Chang Y.Yang variety synonym Populus tadshikistanica Kom. species synonym Populus tacamahacca var. candicans (Aiton) Stout variety synonym Populus deltoides f. erecta (Sél.-Longch.) C.K.Schneid. form synonym Populus szechuanica var. rockii Rehder variety synonym Populus sylvicola Dode species doubtful Populus supina Lodd. ex G.Don species synonym Populus deltoide W.Bartram ex Marshall, 1785 species accepted Populus sunghoensis T.B.Chao & C.W.Chiuan species doubtful Populus deglubata Reinw. ex Blume species doubtful Populus stricta Mert. ex Loudon species synonym Populus ×steiniana Bornm. species accepted Populus sinxiangensis T.B.Chao species doubtful Populus sinuata Dode species doubtful Populus sinensis Dode species doubtful Populus simonii var. tsinlingensis Z.Wang & C.Y.Yu variety synonym Populus crispa Dippel species synonym Populus simonii var. rotundifolia X.C.Lu ex Z.Wang & S.L.Tung variety synonym Populus cordifolia Burgsd. species synonym Populus simonii f. robusta Z.Wang & S.L.Tung form synonym Populus cordata Poir. species synonym Populus simonii f. rhombifolia (Kitag.) Z.Wang & S.L.Tung form synonym Populus comesiana Dode species doubtful Populus coloradensis Dode species synonym Populus simonii var. ovata T.Y.Sun variety heterotypic synonym Turanga pruinosa (Schrenk) Kimura species synonym Populus simonii var. manshurica (Nakai) Kitag. variety synonym Turanga mauritanica (Dode) Kimura species synonym Populus simonii var. luoningensis T.B.Chao variety synonym Turanga litwinowiana (Dode) Kimura species synonym Populus simonii var. liaotungensis (Z.Wang & A.K.Skvortsov) Z.Wang & S.L.Tung variety synonym Turanga illicitana (Dode) Kimura species synonym Populus cinerea Raf. species doubtful Turanga ilicifolia (Engl.) Kimura species synonym Populus ciliolata Raf. species doubtful Populus simonii var. latifolia Z.Wang & S.L.Tung variety synonym Turanga ×glaucicomans (Dode) Kimura species synonym Populus cilicica Kotschy ex Wesm. species synonym Turanga euphratica (Olivier) Kimura species synonym Populus ciliata var. weixi Z.Wang & S.L.Tung variety synonym Populus simonii var. griseoalba T.Y.Sun variety heterotypic synonym Turanga diversifolia (Schrenk) Kimura species synonym Populus ciliata var. gyirongensis Z.Wang & S.L.Tung variety synonym Populus simonii var. dunhuangensis H.L.Yang & C.F.Fang variety synonym Turanga bonnetiana (Dode) Kimura species synonym Populus simonii var. breviamenta T.Y.Sun variety synonym Turanga ariana (Dode) Kimura species synonym Populus simonii f. brachychaeta P.Yu & C.F.Fang form synonym Tsavo ilicifolia (Engl.) Jarm. species synonym Populus simaroa Rzed. species accepted Populus ×charbinensis var. pachydermis Z.Wang & S.L.Tung variety synonym Tremula vulgaris Opiz species synonym Populus silvestrii Pamp. species synonym Tremula trepida Raf. species synonym Populus ×certinensis House species doubtful Populus sieboldii Miq. species accepted Populus ceretana Sennen species doubtful Populus sibirica Tausch species synonym Populus shanxiensis Z.Wang & S.L.Tung species accepted Populus celtidifolia T.B.Chao species doubtful Populus serrata f. rotundata T.B.Chao & Zhi X.Chen form synonym Populus ×serotina var. erecta (Sél.-Longch.) A.Henry variety synonym Populus cathayana var. pendula T.B.Chao variety synonym Populus ×serotina var. aurea A.Henry variety synonym Populus cataracti Kom. species synonym Populus scythica Dode species doubtful Populus carreiriana Dode species doubtful Populus caroliniensis Moench species accepted Populus ×caroliniana Mc Minn & Maino species synonym Populus candicans Aiton species heterotypic synonym Populus ×rollandii Rouleau species accepted Populus ×canadensis var. regenerata (A.Henry) Rehder variety synonym Populus ×canadensis f. marilandica (Bosc ex Poir.) Geerinck form synonym Populus ×rogalinensis Bugała species doubtful Populus rockii (Rehder) H.L.Yang species accepted Populus ×canadensis var. gelrica (Houtz.) Geerinck variety synonym Populus ×robusta (Simon-Louis ex Schelle) C.K.Schneid. species synonym Populus ×canadensis var. erecta (Sél.-Longch.) Dippel variety synonym Populus reticulata Raf. species doubtful Populus ×canadensis var. duhamelii Fiori variety synonym Populus repanda Baumg. species synonym Populus ×canadensis var. carolinensis Fiori variety synonym Populus ×canadensis f. aurea Rehder form synonym Populus ×rasumowskiana (Regel) Schröd. ex Dippel species accepted Populus ×rasumofskyana Schröd. species homotypic synonym Populus ×ramulosa Dode species doubtful Populus quercifolia Loudon species synonym Populus qiongdaoensis T.Hong & P.Luo species accepted Populus qamdoensis Z.Wang & S.L.Tung species accepted Populus pyriformis Royle species synonym Populus cana T.Y.Sun species synonym Populus purdomii var. rockii (Rehder) C.F.Fang & H.L.Yang variety synonym Populus ×braunii C.K.Schneid. species doubtful Populus brandegeei var. glabra Wiggins variety synonym Populus pubescens f. vaillantiana (Dode) Jovan. & Tucovic form synonym Populus usbekistanica Kom. species accepted Populus bonnetiana Dode species synonym Populus bolleana Mast. species synonym Populus bogueana Dode species doubtful Populus bisattenuata Dode species doubtful Populus biformis Raf. species doubtful Populus bicolor Raf. species doubtful Populus pseudotremula Rubtzov species synonym Populus ×pseudotomentosa Z.Wang & S.L.Tung species accepted Populus pseudosimonii f. bisexualis C.F.Fang & H.L.Yang form synonym Populus pseudomaximowiczii f. glabrata Z.Wang & S.L.Tung form synonym Populus benzoifera Tausch species synonym Populus pseudograndidentata Dode species doubtful Populus belgica Lodd. ex Loudon species synonym Populus pseudoglauca var. yatungensis (Z.Wang & P.Y.Fu) N.Chao variety synonym Populus beijengensis W.Y.Hsu species doubtful Populus ×pseudocanadensis C.K.Schneid. species doubtful Populus balsamifera f. typica C.K.Schneid. form synonym Populus balsamifera subsp. trichocarpa (Torr. & A.Gray ex Hook.) Brayshaw subspecies synonym Populus pruinosa Schrenk species accepted Populus alba subsp. umbraculifera Sudw. subspecies synonym Populus platyphylla var. glauca T.Y.Sun & Z.F.Chen variety synonym Populus platyphylla var. flaviflora T.Y.Sun variety synonym Populus pilosa var. leiocarpa Z.Wang & S.L.Tung variety synonym Populus balsamifera var. michauxii (Dode) A.Henry variety synonym Populus balsamifera var. laurifolia Kuntze variety synonym Populus ×petrowskiana R.I.Schröd. ex Regel species accepted Populus ×brabantica (Houtz.) Houtz. species synonym Populus peronaeana Dode species doubtful Populus balsamifera var. hastata (Dode) Brayshaw variety synonym Populus pendula Tausch species synonym Populus balsamifera var. fernaldiana Rouleau variety synonym Populus balsamifera var. candicans (Aiton) A.Gray variety proparte synonym Populus balsamifera var. canadensis (Moench) Sudw. variety synonym Populus pellostachya Dode species doubtful Populus balsamifera f. angustata C.K.Schneid. form synonym Populus ×pekinensis L.Henry species synonym Populus parvidentata Dode species doubtful Populus ×baileyana Henry species synonym Populus pamirica var. trichorachis (Z.Wang & S.L.Tung) N.Chao & J.Liu variety synonym Populus pamirica var. tibetica (C.K.Schneid.) N.Chao & J.Liu variety synonym Populus pamirica var. akqiensis Chang Y.Yang variety heterotypic synonym Populus australis Ten. species synonym Populus atheniensis Lodd. ex C.F.Ludw. species synonym Populus palmata Dode species doubtful Populus athemse Foug. species synonym Populus athemsay Fouger. species synonym Populus oxyodonta Mert. ex Loudon species synonym Populus ovata Dippel species doubtful Populus ontariensis Lodd. ex Loudon species synonym Populus ariana Dode species synonym Populus ×odorata R.I.Schröd. species doubtful Populus octorabdos Dode species doubtful Populus arembergiana Dippel species synonym Populus arbeel Curtis species synonym Populus angustifolia var. coloradensis (Dode) Gombócz variety synonym Populus nivea (Aiton) Willd. species synonym Populus ningshanica Z.Wang & S.L.Tung species accepted Populus adenopoda Maxim. species accepted Populus amygdalaceifolia Griff. species synonym Populus ×amurensis Kom. species accepted Populus ×ambigua Beck species synonym Populus ×albotremula C.K.Schneid. species doubtful Populus alba var. pendula Dippel variety synonym Populus alba var. nutans Sudw. variety synonym Populus alba f. brandegeei (C.K.Schneid.) Gombócz form synonym Populus alaschanica Kom. species accepted Populus aegyptiaca W.Baxter species synonym Populus nana Royle species doubtful Populus adenopoda var. rotundifolia T.B.Chao variety synonym Populus nakaii A.K.Skvortsov species accepted Populus adenopoda var. platyphylla Z.Wang & S.L.Tung variety synonym Populus munsoniana Dode species doubtful Populus adenopoda var. nanchaoensis T.B.Chao & C.W.Chiuan variety synonym Populus mulleriana Dode species synonym Populus adenopoda var. microphylla T.B.Chao variety synonym Populus ×moscoviensis Schröd. species accepted Populus adenopoda f. microcarpa Z.Wang & S.L.Tung form synonym Populus monticola Brandegee species homotypic synonym Populus adenopoda f. cuneata Z.Wang & S.L.Tung form synonym Populus monilifera var. erecta Sél.-Longch. variety synonym Populus acerifolia Lodd. ex Loudon species synonym Populus microcarpa Hook.fil. & Thomson ex Hook.fil. species synonym Populus megaleuce Dode species doubtful Populus litvinoviana Dode species synonym Balsamiflua litvinoviana (Dode) Kimura species synonym Populus gildeadensis Roul. species synonym Turanga litvinoviana (Dode) Kimura species synonym Populus newberryi Cockerell, 1906 species accepted Populus leuce Rossmässler, 1850 species accepted Populus melanarioides Lesquereux, 1875 species accepted Populus occidentalis Knowlton, 1898 species accepted Populus knightii Knowlton, 1897 species accepted Populus aristolochioides Lesquereux, 1875 species accepted Populus tenuinervata Lesquereux, 1888 species accepted Populus dakotana Cockerell, 1906 species accepted Populus cyclomorpha Knowlton & Cockerell, 1919 species accepted Populus hookeri Heer, 1868 species accepted Populus leucophylla Unger, 1850 species accepted Populus obtrita Dawson, 1890 species accepted Populus subrotunda Lesquereux, 1868 species accepted Populus kansaseana Lesquereux, 1891 species accepted Populus scudderi Cockerell, 1906 species accepted Populus trinervis Dawson, 1882 species accepted Populus denticulata Heer, 1883 species accepted Populus aequalis Lesquereux, 1870 species accepted Populus rectinervata Dawson, 1882 species accepted Populus protozaddachi Dawson, 1882 species accepted Macreightia crassa (Lesquereux, 1883) species accepted Populus nebrascensis Newberry, 1868 species accepted Populus hyperborea Heer, 1873 species accepted Populus rhomboidea Newberry, 1859 species accepted Populus berggreni Heer, 1871 species accepted Populus stygia Heer, 1873 species accepted Populus zhenyuanensis Liang & Zhou, 2016 species accepted Populus tremula subsp. pendula (Loudon) Asch. & Graebn. subspecies synonym Populus pseudobalsamifera Fisch. species heterotypic synonym Populus simonii var. mandshurica (Nakai) Kitag. variety synonym Populus alba var. crispa Mérat variety synonym Populus balsamifera var. candicans (Aiton) A.Gray variety proparte synonym Populus salicifolia Raf. species proparte synonym Populus glandulosa (Uyeki) Uyeki species proparte synonym Populus acuminata var. rehderi Sarg. variety proparte synonym Populus grandidentata f. meridionalis Tidestr. form synonym Populus trichocarpa Torr. & A.Gray ex Hook. species accepted Populus trichocarpa f. ingrata Jeps. form synonym Populus trichocarpa var. hastata (Dode) A.Henry variety synonym Populus tremula var. tremula variety synonym Populus simonii f. liaotungensis (Z.Wang & A.K.Skvortsov) Kitag. form synonym Populus ×canadensis var. marilandica (Rehder) Rehder variety synonym Populus ×canadensis f. erecta (Sél.-Longch.) Rehder form synonym Populus canadensis var. aurea Van Geert ex Dippel, 1891 variety synonym Populus balsamifera f. candicans (Aiton) B.Boivin form synonym Populus alba subsp. pyramidalis (Bunge) W.Wettst. subspecies synonym Populus mexicana Wesm. ex A.DC. species doubtful Populus tremula f. pendula G.Kirchn. form synonym Populus tremula var. pendula Loudon variety synonym Populus alba var. tomentosa (Carriere) Wesm. variety synonym Populus alba var. subintegerrima Lange variety synonym Populus hybr species accepted Populus tremuloides f. pendula (Tausch) Schelle form synonym Populus suaveolens var. woobstii R.I.Schrod. ex Regel variety synonym Populus balsamifera var. woobstii (R.I.Schrod. ex Regel) Dippel variety synonym Populus simonii f. fastigiata C.K.Schneid. form synonym Populus balsamifera var. californica S.Watson variety synonym Populus balsamifera var. subcordata Hyl. variety synonym Populus michauxii Dode species synonym Populus balsamifera var. lanceolata Marshall variety synonym Populus tacanahaca var. candicans (Aiton) Stout variety synonym Populus tacanahaca var. michauxii (Dode) Farw. variety synonym Populus tacamahacca var. michauxii (Dode) Farw. variety synonym Populus tacanahaca var. lanceolata (Marshall) Farw. variety synonym Populus latior Braun, 1835 species accepted Populus alba var. nivea Aiton variety synonym Populus ×vernirubens A.Henry species synonym Populus ×interamericana species synonym Populus ×moskoviensis R.I.Schröd. species doubtful Populus woobstii Dode species synonym Populus brevifolia Carriere ex C.K.Schneid. species synonym Populus zaddachi Heer, 1859 species accepted Populus xantholithensis Knowlton, 1899 species accepted Populus vivaria Knowlton, 1899 species accepted Populus speciosa Ward, 1885 species accepted Populus glandulifera Heer, 1856 species accepted Populus balsamoides Göppert, 1855 species accepted Populus daphnogenoides Ward, 1885 species accepted Leuce ×canescens (Aiton) Opiz species synonym Leuce alba (L.) Opiz species synonym Betula ciliata Steud. species synonym Salix salomonii (Carrière) Carrière species synonym Populus haoana W.C.Cheng & C.Wang species accepted Populus lasiocarpa Oliv. species accepted Populus lasiocarpa var. lasiocarpa variety synonym Populus kangdingensis Z.Wang & S.L.Tung species accepted Populus kangdingensis var. kangdingensis variety synonym Populus jacquemontiana Dode species synonym Populus yunnanensis Dode species accepted Populus hsinganica Z.Wang & A.K.Skvortsov species accepted Populus yatungensis (Z.Wang & P.Y.Fu) Z.Wang & S.L.Tung species accepted Populus ×hopeiensis Hu & L.D.Chow species accepted Populus honanensis T.B.Chao & C.W.Chiuan species doubtful Populus wilsonii C.K.Schneid. species accepted Populus wilsonii f. wilsonii form synonym Populus wilsonii var. wilsonii variety synonym Populus schneideri (Rehder) N.Chao species accepted Populus undulata species accepted Populus gamblei Haines species synonym Populus fremontii var. fremontii variety synonym Populus tremuloides var. tremuloides variety synonym Balsamiflua euphratica (Oliv.) Kimura species synonym Populus tremuloides f. tremuloides form synonym Populus fangiana N.Chao & J.Liu species synonym Populus tomentosa var. tomentosa variety synonym Populus talassica Kom. species synonym Populus tacamahacca Mill. species synonym Populus szechuanica C.K.Schneid. species accepted Populus szechuanica var. szechuanica variety synonym Populus simonii var. simonii variety synonym Populus ciliata Wall. ex Royle species accepted Populus ciliata var. ciliata variety synonym Populus ×charbinensis Z.Wang & A.K.Skvortsov species accepted Populus charbinensis var. charbinensis variety synonym Populus serotina Dippel species synonym Populus cathayana Rehder species accepted Populus rotundifolia Griff. species accepted Populus purdomii Rehder species synonym Populus purdomii var. purdomii variety synonym Populus brandegeei C.K.Schneid. species accepted Populus pubescens (Parl.) Jovan. & Tucović species doubtful Populus pseudosimonii Kitag. species accepted Populus pseudomaximowiczii Z.Wang & S.L.Tung species accepted Populus pseudomaximowiczii f. pseudomaximowiczii form synonym Populus pseudoglauca Z.Wang & P.Y.Fu species accepted Populus pseudoglauca var. pseudoglauca variety synonym Populus platyphylla T.Y.Sun species synonym Populus pilosa Rehder species synonym Populus pilosa var. pilosa variety synonym Populus pamirica Kom. species accepted Populus pamirica var. pamirica variety synonym Populus alba subsp. alba subspecies synonym Populus alba var. alba variety synonym Populus adenopoda var. adenopoda variety synonym Populus adenopoda f. adenopoda form synonym Populus carolinensis Foug. species heterotypic synonym Populus argentea Foug. species doubtful Populus tremuloides Tidestr. species synonym Populus canadensis Foug. species doubtful Populus girinensis var. girinensis variety synonym Populus ×kashmirica A.K.Skvortsov species accepted Populus villosa Láng ex Rchb. species synonym Populus alba var. denudata (A.Braun) Wesm. variety synonym Populus transcaucasica Jarm. ex Grossh. species synonym Populus franklinii Sennen species doubtful Populus robusta Dode, 1905 species accepted Populus viminalis Poir. species synonym Populus diversifolia Schrenk ex Fisch. & C.A.Mey. species synonym Populus ×rogalinensis Wróbl. species synonym Populus balsamifera Mill. species synonym Populus euphratica var. mauritanica (Dode) Maire variety synonym Populus ×viadrii Ruediger species doubtful Populus ×canadensis f. eugenei (Simon-Louis ex L.Mathieu) Schelle form synonym Populus latidentata Dawson, 1885 species accepted Populus litigiosa Heer, 1866 species accepted Populus longior Dawson, 1882 species accepted Populus microphylla Newberry, 1868 species accepted Populus menispermoides Ward, 1905 species synonym Populus pendula Lodd. ex Burgsd. species heterotypic synonym Populus tremula f. serrata Zapal. form synonym Populus tremula var. pedicellata Zapal. variety synonym Populus tremula var. canescens (Aiton) Jess. variety synonym Populus alba subsp. canescens (Aiton) Syme subspecies synonym Populus tremula var. betulifolia Hausskn. variety synonym Populus alba var. sinuata Döll variety synonym Populus alba var. parvifolia Zapal. variety synonym Populus tremula var. arguta Döll variety synonym Populus eximia Göppert, 1855 species synonym Populus crassa (Lesquereux, 1883) species synonym Populus cordifolia Newberry, 1868 species synonym Populus tremula var. arenaria Zapal. variety synonym Populus laevigata Lesquereux, 1868 species synonym Populus orbicularis (Newberry, 1896) species synonym Populus canescens var. denudata Döll variety synonym Populus tremula var. glabra Syme variety synonym Populus tremula var. sericea Döll variety synonym Populus hyrcana Grossh. species accepted Populus ×bachelieri Solem. species synonym Populus alba subsp. nivea (Willd.) Maire & Weiller subspecies synonym Populus tremula var. dodeana Rouy variety synonym Populus peroneana Dode, 1905 species synonym Populus hopeiensis Poljakov species synonym Populus tremula var. villosa (Láng ex Rchb.) Peterm. variety synonym Populus alba var. nivea Wesm. variety homotypic synonym Celtis ilicifolia Engl. species synonym Populus tacamahacca var. lanceolata (Marshall) Farw. variety synonym Populus ×rasumofskyana Schröd. ex Koehne species synonym Populus alba var. nivea (Wesm. ex DC.) P.Fourn., 1928 variety synonym Populus denudata A.Braun, 1850 species synonym Populus tremula var. freynii Hervier variety synonym Populus lesquereuxi Cockerell, 1906 species accepted Populus deltoides var. monilifera × Populus tremuloides species accepted Populus deltoides x trichocarpa species synonym Populus deltoides x nigra species accepted Populus primaveralepensis A.Vázquez, Muñiz-Castro & Zuno species accepted Populus alba × tremula species synonym Populus tremula × tremuloides species synonym Populus tremula var. adenopoda (Maxim.) Burkill variety synonym Populus hybrida E.H.L.Krause species doubtful Populus subintegerrima var. berkanensis Sennen & Mauricio variety synonym Populus euphratica subsp. denhardtiorum Engl. subspecies synonym Populus cathayana var. schneideri Rehder variety synonym Populus ×bachofenii Wierzb., 1838 species synonym Populus pendula Steud. species synonym Populus macrocarpa Schrenk species synonym Populus pseudotremula Schur species synonym Populus salicifolia Loudon species proparte synonym Populus rotundifolia var. macranthela (H.Lév. & Vaniot) Gombócz variety synonym Populus acladesca K.Koch species heterotypic synonym Populus candicans Lodd. ex Loudon species synonym Populus simonii f. pendula C.K.Schneid. form synonym Populus euphratica f. pruinosa (Schrenk) Nevski form synonym Populus schischkinii Grossh. species synonym Populus balsamifera Lyall species heterotypic synonym Populus ×serotina Hartig species synonym Populus freynii Dode species doubtful Populus tremula subsp. microtremula (Grossh.) Kamelin subspecies synonym Populus wenxianica Z.C.Feng & J.L.Guo ex G.H.Zhu species accepted Populus plantierensis Dode species synonym Populus angustifolia Newb. species heterotypic synonym Populus afghanica var. tadshikistanica (Kom.) Z.Wang & Chang Y.Yang variety synonym Populus illicitana Dode species synonym Populus alba var. integrifolia Ball variety synonym Populus monilifera Newb. species accepted Populus euphratica var. bonnetiana (Dode) Maire variety synonym Populus ×wettsteinii Hämet-Ahti species synonym Populus alba var. bolleana (Lauche) Ed.Otto variety synonym Aigiros heterophyllos (L.) Raf. species synonym Populus suaveolens Fisch. species accepted Populus bachofenii Wierzb. ex Rochel species synonym Populus eugenei Dode species doubtful Populus kanjilaliana subsp. usbekistanica (Kom.) Poljak. subspecies synonym Populus usbekistanica subsp. tadshikistanica (Kom.) Bugula subspecies synonym Populus hickeliana var. tremulifolia Dode & Sennen variety synonym Populus hybrida var. berolinensis K.Koch variety synonym Populus ×euramericana (Dode) Guinier ex Piccaroli, 1953 species synonym Populus minhoensis S.F.Yang & H.F.Wu species accepted Populus xintercurrens Goodrich & S.L.Welsh species accepted Populus mexicana Wesm. species accepted Populus vancouveriana Trel. ex Tidestr. species synonym Populus alba var. hickeliana (Dode) Fiori variety synonym Populus angustifolia Weinm. species doubtful Populus tremula var. repanda (Baumg.) Nyman variety synonym Populus simonii var. rhombifolia Kitag. variety synonym Populus tremula f. tomentella C.K.Schneid. form synonym Populus ×hybrida Samp. species accepted Populus ciliata Wall. species heterotypic synonym Populus flexibilis Dode, 1905 species synonym Populus palmata Loudon species synonym Populus nivea Wesm. species synonym Populus heterophylla K.Koch species heterotypic synonym Populus ×marilandica (Bosc ex Poir.) Rehder species synonym Populus ciliata var. aurea C.Marquand & Airy Shaw variety synonym Populus ciupi S.Y.Wang species doubtful Populus tremula var. australis (Ten.) Nyman variety synonym Populus alba var. microphylla Maire variety synonym Populus hybrida var. berolinensis C.Koch variety synonym Populus trichocarpa var. trichocarpa variety synonym Populus eugenei K.Koch species synonym Populus nigra Mill. species heterotypic synonym Populus tremula var. glandulosa Uyeki variety synonym Populus monticola Mert. ex Loudon species synonym Populus ×berolinensis K.Koch species accepted Populus bolleana Lauche species synonym Populus laurifolia var. simonii (Carrière) Regel variety synonym Populus tremula var. sieboldii Kudô variety synonym Populus ×sibirica G.V.Krylov & G.V.Grig. ex A.K.Skvortsov species accepted Populus alba f. pyramidalis (Bunge) Dippel form synonym Populus glandulosa Willd. ex Steud. species synonym Populus italica Du Roi species accepted Populus simonii var. rotundifolia X.C.Lu variety homotypic synonym Populus monticola Mert. species homotypic synonym Populus belgica Lodd. species homotypic synonym Populus ×sibirica G.V.Krylov & G.V.Grig. species homotypic synonym Populus suaveolens var. woobstii R.I.Schrod. variety homotypic synonym Populus stricta Mert. species homotypic synonym Populus tidwellii Manchester et al., 2006 species accepted Populus xcanadensis Moench species synonym Populus ×rasumowskiana (Regel) Schröd. species homotypic synonym Populus arembergica Lodd. species homotypic synonym Populus brevifolia Carriere species homotypic synonym Populus glandulosa Willd. species homotypic synonym Populus candicans Lodd. species homotypic synonym Populus transcaucasica Jarm. species homotypic synonym Populus acerifolia Loddiges, 1838 species accepted Populus deglubata Reinw. species homotypic synonym Populus xberolinensis K.Koch species synonym Populus lindleyana Booth species homotypic synonym Balsamiflua mauritanica (Dode) Kimura species synonym Populus pendula Lodd. species homotypic synonym Populus deltoide W.Bartram species homotypic synonym Aigiros ×candicans (Aiton) Nieuwl. species synonym Populus ontariensis Lodd. species homotypic synonym Populus pendula Hort species accepted Populus oxyodonta Mert. species homotypic synonym Populus gamblei Dode species accepted Populus trichocarpa Torrey & A.Gray species doubtful Populus ×canadensis f. robusta Simon-Louis ex Schelle form synonym Populus liaotungensis Z.Wang & A.K.Skvortsov species accepted Populus ×hybrida Rchb. species synonym Populus ×rasumowskiana C.K.Schneid. species doubtful Populus ×elongata Schelle, 1903 species accepted Populus trichocarpa var. ingrata (Jeps.) Parish variety synonym Populus yunnanensis var. yatungensis Z.Wang & P.Y.Fu variety synonym Populus balsamifera var. simonii (Carrière) Wesm. variety synonym Populus balsamifera subsp. trichocarpa (Torr. & A.Gray) Hultén subspecies synonym Populus ×canadensis Moench species accepted Populus ×beijingensis W.Y.Hsu species accepted Populus szechuanica var. tibetica C.K.Schneid. variety synonym Populus candicans F.Michx. species heterotypic synonym Populus ×regenerata A.Henry species synonym Populus ×eugenei Simon-Louis ex L.Mathieu species synonym Populus tremula var. villosa (Láng) Nyman variety synonym Populus pendula Lodd. ex Loudon species heterotypic synonym Populus tristis Fisch. ex Dippel species accepted Populus pseudoglauca var. weixi (Z.Wang & S.L.Tung) N.Chao & J.Liu variety synonym Populus canadensis var. aurea Van Geert variety homotypic synonym Populus viminalis Lodd. species homotypic synonym Populus deltoides W.Bartram species homotypic synonym Populus grisea Lodd. species homotypic synonym Populus supina Lodd. species homotypic synonym Populus longifolia Fisch. species synonym Populus atheniensis Lodd. species homotypic synonym Populus intermedia Mert. species homotypic synonym Populus xcanescens (Aiton) Sm. species synonym Populus ×wobstii R.I.Schröd., 1881 species accepted Populus cilicica Kotschy species homotypic synonym Populus russelli Knowlton, 1893 species accepted Populus nervosa Newberry, 1868 species accepted Populus grewiopsis Ward, 1885 species accepted Phyllites orbicularis (Newberry, 1896) species accepted Populus pyrifolia Kirchner, 1898 species accepted Populus ricei Fontaine, 1905 species accepted Populus harkeriana Lesquereux, 1891 species accepted Populus craspedodroma Ward, 1885 species accepted Populus obovata Knowlton, 1900 species accepted Diospyros cuspidata Kirchner, 1898 species synonym Populus cuneata Newberry, 1868 species accepted Populus richardsoni Heer, 1868 species accepted Populus ungeri Lesquereux, 1878 species accepted Populus cordata Newberry, 1868 species accepted Populus amblyrhyncha Ward, 1885 species accepted Populus problematica Knowlton, 1893 species accepted Populus clarkiana Hollick, 1906 species accepted Populus xwettsteinii Hämet-Ahti species synonym Populus washingtonensis Knowlton, 1926 species accepted Populus elliptica Newberry, 1868 species accepted Populus whitei Ward, 1885 species accepted Populus cretacea Knowlton, 1905 species accepted Populus microtremuloides Knowlton, 1916 species accepted Populus sonorensis Axelrod, 1939 species accepted Populus hederoides Ward, 1885 species accepted Populus mutabilis Heer, 1856 species accepted Populus rotundifolia Newberry, 1882 species synonym Populus eotremuloides Knowlton, 1898 species accepted Populus acerifolia Newberry, 1868 species synonym Populus inaequalis Ward, 1885 species accepted Populus neotremuloides Knowlton, 1918 species accepted Populus pliotremuloides Axelrod, 1937 species accepted Populus tibetica Mscr. species accepted Populus lindgreni Knowlton, 1898 species accepted Populus subrotundata Lesquereux, 1868 species synonym Populus meedsii Knowlton, 1893 species accepted Populus pseudotremuloides Hollick, 1906 species accepted Populus neomexicana Knowlton, 1918 species accepted Populus decipiens Lesquereux, 1872 species accepted Populus alexanderi Dorf, 1930 species accepted Populus oxyrhyncha Ward, 1885 species accepted Populus polymorpha Newberry, 1882 species accepted Populus wardii Knowlton, 1900 species accepted Populus trichocarpa subsp. hastata (Dode) Dode subspecies synonym Populus prefremontii Axelrod, 1937 species accepted Populus arctica Heer, 1868 species accepted Populus heteromorpha Knowlton, 1926 species accepted Populus pseudocredneria Cockerell, 1908 species accepted Populus flabellum Newberry, 1863 species accepted Populus potomacensis Ward, 1895 species accepted Populus smilacifolia Newberry, 1868 species accepted Populus fairii Knowlton, 1926 species accepted Populus auriculata Ward, 1905 species accepted Populus alba subsp. canescens (Aiton) Bonnier & Layens subspecies synonym Populus alba var. nivea Wesm. ex DC., 1864 variety synonym Populus subintegerrima (Lange) Sennen & Mauricio species synonym Populus suaveolens var. macrocarpa Schrenk variety synonym Populus ×gombocziana Rapaics species synonym Populus alba subsp. major (Mill.) Kamelin subspecies synonym |
PNSS