Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Betulaceae

View taxon page for Betulaceae


Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Leaf base oblique-cordate; fruits 1–2 per , not winged, each enclosed in a papery  of 2 fused bractspistillate calyx present, ovary inferior ..... CORYLUS

1' Leaf base subcordate, rounded, ± , or ; fruits many per catkin, winged, each subtended but not enclosed by 1 ; pistillate calyx 0, ovary superior

2. Pistillate catkin cone-like, with woody bracts remaining attached after fruit release ..... ALNUS

2' Pistillate catkin not cone-like, with papery, lobed bracts released with but not attached to fruit ..... BETULA


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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, [accessed on ]

Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

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