Ostrya Scopoli. Subfamily: Coryloideae. Hop-hornbeam, Ironwood.
A genus of 5-9 species, trees, of temperate regions of the Northern Hemisphere.
Ref: Furlow (1997) In Flora of North America Editorial Committee (1997); Govaerts & Frodin (1998); Kubitzki, Rohwer, & Bittrich (1993). Show full citations.
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