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Betula alleghaniensis f. macrolepis (Fernald) Brayshaw

Canad. Field-Naturalist
Rank:Form
Family: Betulaceae

Betula chinensis f. nana (Liou) Kitag.

Neo-Lineam. Fl. Manshur.
Status:Synonym of Betula chinensis Maxim.
Rank:Form
Family: Betulaceae

Betula chinensis f. linearisquama Hatus.

Rep. Exp. Forest. Agric. Kyusk. Univ.
Status:Synonym of Betula chinensis Maxim.
Rank:Form
Family: Betulaceae

Betula alba f. lobata Regel

Prodr.
Status:Synonym of Betula pendula Roth
Rank:Form
Family: Betulaceae

Betula ermanii f. ganjuensis (Koidz.) T.Shimizu

New Alp. Fl. Japan Color
Status:Synonym of Betula ermanii Cham.
Rank:Form
Family: Betulaceae

Betula cajanderi f. fruticans Kozhevn.

Bot. Zhurn. (Moscow & Leningrad)
Status:Synonym of Betula pendula Roth
Rank:Form
Family: Betulaceae

Betula dahurica f. ovalifolia (Liou) S.L.Tung

Bull. Bot. Res., Harbin
Status:Synonym of Betula dahurica Pall.
Rank:Form
Family: Betulaceae

Betula dahurica f. tiliifolia (Liou) S.L.Tung

Bull. Bot. Res., Harbin
Status:Synonym of Betula dahurica Pall.
Rank:Form
Family: Betulaceae

Betula dahurica f. oblongifolia (Liou) S.L.Tung

Bull. Bot. Res., Harbin
Status:Synonym of Betula dahurica Pall.
Rank:Form
Family: Betulaceae

Betula alba f. occidentalis (Hook.) Fernald

Amer. J. Sci.
Status:Synonym of Betula occidentalis Hook.
Rank:Form
Family: Betulaceae

Betula alba f. dalecarlica (L.f.) Regel

Prodr.
Status:Synonym of Betula pendula Roth
Rank:Form
Family: Betulaceae

Betula pendula f. palmeri Hämet-Ahti

Ann. Bot. Fenn.
Status:Synonym of Betula pendula Roth
Rank:Form
Family: Betulaceae

Betula pumila f. hallii (Howell) Brayshaw

Occas. Pap. British Columbia Prov. Mus.
Status:Synonym of Betula pumila L.
Rank:Form
Family: Betulaceae

Betula pumila f. pubescens H.J.P.Winkl.

Pflanzenr.
Status:Synonym of Betula pumila L.
Rank:Form
Family: Betulaceae

Betula pumila f. latipes (H.J.P.Winkl.) Lepage

Naturaliste Canad.
Status:Synonym of Betula pumila L.
Rank:Form
Family: Betulaceae

Alnus fruticosa f. barbinervis Nakai

J. Jap. Bot.
Rank:Form
Family: Betulaceae

Alnus incana f. bipinnatifida Brenner

Florist. Handb.
Status:Synonym of Alnus incana (L.) Moench
Rank:Form
Family: Betulaceae

Alnus mandshurica f. barbinervis (Nakai) W.Lee

Lin. Fl. Koreae
Rank:Form
Family: Betulaceae

Betula lenta f. uber (Ashe) McAll. & Ashburner

Bot. Mag.
Rank:Form
Family: Betulaceae

Betula pendula f. fastigiata (Clemenc.) Dippel

Handb. Laubholzk.
Status:Synonym of Betula pendula Roth
Rank:Form
Family: Betulaceae

Betula verrucosa f. fastigiata K.Koch

Dendrologie
Status:Synonym of Betula pendula Roth
Rank:Form
Family: Betulaceae

Betula verrucosa f. bircalensis Mela

Lyhk. Kasv.
Status:Synonym of Betula pendula Roth
Rank:Form
Family: Betulaceae

Betula verrucosa f. elegans Dippel

Handb. Laubholzk.
Status:Synonym of Betula pendula Roth
Rank:Form
Family: Betulaceae

Betula verrucosa f. expansa Regel

Nouv. Mém. Soc. Imp. Naturalistes Moscou
Status:Synonym of Betula pendula Roth
Rank:Form
Family: Betulaceae