Corylus spinescens RehderJ. Arnold Arbor. 7: 147 (1926)Status:Unchecked Rank:Species Family: Betulaceae
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Betula rosendahlii Butters & AbbeRhodora 55: 143 (1953)Status:Unchecked Rank:Species Family: Betulaceae
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Alnus laciniata Ehrh.Beitr. Naturk. [Ehrhart] 3: 22. 1788 [Jun-Jul 1788]Status:Unchecked Rank:Species Family: Betulaceae
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Betula guthriei Sudw.Amer. Forests Forest Life 33: 286 (1927)Status:Unchecked Rank:Species Family: Betulaceae
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Alnus fiekii CallierJahresber. Schles. Ges. Vaterl. Cult. 69(2): 83 (1891 publ. 1892)Status:Unchecked Rank:Species Family: Betulaceae
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Alnus gigantea NakaiJ. Jap. Bot. 16: 67 (1940)Status:Unchecked Rank:Species Family: Betulaceae
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Alnus figertii CallierDeutsche Bot. Monatsschr. vii. (1889) 56.Status:Unchecked Rank:Species Family: Betulaceae
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Alnus elongata RoyleIll. Bot. Himal. Mts. [Royle] 343, nomen (Quid?). 1839 [Feb 1839]Status:Unchecked Rank:Species Family: Betulaceae
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Alnus dimitrovii Jordanov & Kitan.Izv. Bot. Inst. (Sofia) 1: 8. 1950Status:Unchecked Rank:Species Family: Betulaceae
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Alnus cuneata Geyer ex Walp.Ann. Bot. Syst. 1: 286 (1848)Status:Unchecked Rank:Species Family: Betulaceae
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Alnobetula viridis SchurVerh. Mitth. Siebenbürg. Vereins Naturwiss. Hermannstadt iv. (1853); (Enum. Pl. Trans.). 68.Status:Unchecked Rank:Species Family: Betulaceae
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Alnaster cernuus Schweinf. ex H.J.P.Winkl.Pflanzenr. (Engler) Betulac. 104, in syn. 1904Status:Unchecked Rank:Species Family: Betulaceae
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Corylus atropurpurea hort. ex A.DC.Prodr. [A. P. de Candolle] 16(2.1): 132. 1864 [late Dec 1864]Status:Unchecked Rank:Species Family: Betulaceae
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Betula subalpina Laestad.Bot. Not. 110 (1857).Status:Unchecked Rank:Species Family: Betulaceae
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Betula pseudocarpatica Simonk.Enum. Fl. Transsilv. : 491 (1887)Status:Unchecked Rank:Species Family: Betulaceae
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Betula frutescens hort. ex LavalléeÉnum. Arbres 222, nomen. 1877Status:Unchecked Rank:Species Family: Betulaceae
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Betula fischeri hort. ex AdamowMitt. Deutsch. Dendrol. Ges. 1932, xliv. 348, in obs., nomen.Status:Unchecked Rank:Species Family: Betulaceae
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Betula finitima NotøTromsø Mus. Aarsh. 23: 159 (1901)Status:Unchecked Rank:Species Family: Betulaceae
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Betula dulcis W.YoungCat. Arbres, Arbustes & Pl. Herb. Am. 4 (1783), nomen.Status:Unchecked Rank:Species Family: Betulaceae
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Betula cryptocarpa Laestad.Bot. Not. 1856 (1857) 109.Status:Unchecked Rank:Species Family: Betulaceae
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Betula ciliata Steud.Nomencl. Bot. , ed. 2, 1: 201 (1840)Status:Unchecked Rank:Species Family: Betulaceae
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Betula carelica Merk.Status:Unchecked Rank:Species Family: Betulaceae
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Betula camtschatica RegelNouv. Mém. Soc. Imp. Naturalistes Moscou 13: 107 1861Status:Unchecked Rank:Species Family: Betulaceae
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Betula rustica Laestad.Bot. Not. 1856 (1857) 104.Status:Unchecked Rank:Species Family: Betulaceae
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