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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Perennial herb to tree; sometimes dioecious. Leaf: generally opposite, simple, generally entire, generally deciduous, veins often arched; stipules 0. Inflorescence: cyme or raceme, generally umbel- or head-like, subtended by showy or ± non-showy bracts or open, not subtended by bracts. Flower: generally small, generally bisexual; calyx generally 4-lobed; petals 4[(5)], free; stamens generally as many as, alternate petals; ovary inferior, chambers 1–4, 1-ovuled, style simple, stigma lobes 0[2–4]. Fruit: drupe [berry]. Seed: generally 1–2.
± 12 genera, ± 100 species: especially northern temperate (also southern tropics, subtrop); cultivated as ornamental (Cornus, Aucuba); some timber species. [Kubitzki 2004 in Kubitzki (ed.), The Families and Genera of Vascular Plants. VI:82–90. Springer] —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Eyde 1987 Syst Bot 12:505–518]
Leaf: generally opposite or whorled; base, tip generally tapered. Inflorescence: head-like cyme subtended by showy bracts, open cyme not subtended by bracts, or umbel subtended by non-showy bracts. Fruit: stone 1–2-chambered.Key to Cornus
± 50 species: northern temperate, rare southern hemisphere; many cultivated as ornamental, some for fall color; some fruit used for jam, syrup. (Latin: horn, from the hard wood) [Murrell 1993 Syst Bot 18:469–495] Divided by some into 6 or more genera.
Shrub, small tree, < 5 m; herbage subglabrous. Stem: gray or yellow-brown. Leaf: blade 4.5–9 cm, generally obovate to elliptic, strigose abaxially (vein axils ± tomentose); petiole 5–10 mm. Inflorescence: umbel-like, sessile, few- to several-flowered; bracts 4, ± 1 cm, ± not showy, ± brown, generally with yellow margins, ephemeral; pedicel ± 1 cm, soft-white-hairy. Flower: ± yellow; sepals 0.5 mm; petals 3 mm; style 1 mm. Fruit: 1–1.5 cm, elliptic, green-white, then yellow, then red, then shiny purple-black.
Streambanks; < 1550 m. Northwestern California, Cascade Range, n Sierra Nevada. Mar–Apr [Online Interchange]
Previous taxon: Cornus sericea subsp. sericea
Next taxon: Crassulaceae
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 23 2014
Citation for this treatment: [Author of taxon treatment] 2013. Cornus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=20410, accessed on Oct 23 2014
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© 1996 Arthur H. Bazell, M.D.
|Geographic subdivisions indicated for the distribution of Cornus sessilis|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
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