Show Lower Taxa
Difference between revisions of "Corylus cornuta"
Arbust. Amer., 37. 1785.
Common names: Beaked hazel or hazelnut
Treatment appears in FNA Volume 3. Treatment on page 537.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs </b>or trees, open-spreading, 4–8(–15) m. <b>Bark</b> light to dark brown, smooth. <b>Branches</b> ascending; twigs glabrous to sparsely pubescent, sometimes with glandular hairs. <b>Winter</b> buds containing inflorescences ovoid, 3–5 × 3–4 mm, acute. <b>Leaves</b>: petiole glabrous to moderately pubescent, with or without glandular hairs. <b>Leaf</b> blade nearly orbiculate to narrowly ovate or ovate-oblong, often nearly angular and slightly lobulate near apex, 4–10 × 3.5–12 cm, thin to leathery, base narrowly cordate to narrowly rounded, margins coarsely and often irregularly doubly serrate, apex obtuse to acute or acuminate; surfaces abaxially glabrous to moderately pubescent, usually pubescent on major veins and in vein axils. <b>Inflorescences</b>: staminate catkins lateral along branchlets on short shoots, usually in clusters of 2–3, 4–6 × 0.5–0.8 cm; peduncles 0.5–10 mm. <b>Nuts</b> in clusters of 2–6, completely concealed; bracts bristly, connate at summit, lengthened into extended tubular beak.</span><!-- |
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|publication year=1785 | |publication year=1785 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_834.xml |
|subfamily=Betulaceae subfam. Coryloideae | |subfamily=Betulaceae subfam. Coryloideae | ||
|genus=Corylus | |genus=Corylus | ||
|species=Corylus cornuta | |species=Corylus cornuta | ||
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Revision as of 13:51, 27 July 2019
Shrubs or trees, open-spreading, 4–8(–15) m. Bark light to dark brown, smooth. Branches ascending; twigs glabrous to sparsely pubescent, sometimes with glandular hairs. Winter buds containing inflorescences ovoid, 3–5 × 3–4 mm, acute. Leaves: petiole glabrous to moderately pubescent, with or without glandular hairs. Leaf blade nearly orbiculate to narrowly ovate or ovate-oblong, often nearly angular and slightly lobulate near apex, 4–10 × 3.5–12 cm, thin to leathery, base narrowly cordate to narrowly rounded, margins coarsely and often irregularly doubly serrate, apex obtuse to acute or acuminate; surfaces abaxially glabrous to moderately pubescent, usually pubescent on major veins and in vein axils. Inflorescences: staminate catkins lateral along branchlets on short shoots, usually in clusters of 2–3, 4–6 × 0.5–0.8 cm; peduncles 0.5–10 mm. Nuts in clusters of 2–6, completely concealed; bracts bristly, connate at summit, lengthened into extended tubular beak.
Discussion
Subspecies 2 (2 in the flora).
Corylus cornuta was used medicinally by Native Americans as an emetic, for teething, to expel worms, to heal cuts, and as an astringent (D. E. Moerman 1986).
Selected References
None.
Key
| 1 | Leaf blade ovate to narrowly elliptic, apex distinctly acuminate; twigs and petioles without glandular hairs; involucral tubular beak 2 times or more length of fruit; small to large shrubs of e, c, n North America. | Corylus cornuta subsp. cornuta |
| 1 | Leaf blade nearly orbiculate or broadly elliptic, apex broadly acute to obtuse; twigs and petioles usually bearing glandular hairs; involucral tubular beak less than 2 times length of fruit; large shrubs or small trees of Pacific coastal region of North America. | Corylus cornuta subsp. californica |