|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Betulaceae||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Shrub, small tree. Stem: trunk < 6 m; bark smooth or scaly, dark brown; twigs glandular-hairy, becoming glabrous, brown; lenticels small; winter buds ciliate. Leaf: hairy; blade 4--10 cm, oblong to ovate, base oblique-cordate. Staminate Inflorescence: 4--7 cm; bracts each subtending 3 flowers, 3 bractlets. Pistillate Inflorescence: < 1 cm, appearing as terminal bud; bracts each subtending 2 flowers, 6 bractlets. Staminate Flower: sepals 0; stamens 4. Pistillate Flower: sepals 4; stigmas showy, red. Fruit: 1--2 per catkin, each enclosed in a papery involucre of 2 fused bracts, not winged.
Species In Genus: 15 species: northern hemisphere. Etymology: (Latin: hazelnut, filbert) Note: Flexible stems used in basket-making; some cultivated as food crop.
eFlora Treatment Author: John O. Sawyer, Jr.
Jepson Online Interchange
Previous taxon: Betula occidentalis
Next taxon: Corylus cornuta subsp. californica
Citation for this treatment: John O. Sawyer, Jr. 2016. Corylus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=9116, accessed on September 28, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on September 28, 2016.