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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.
Perennial herb, rhizomed. Stem: < 2 dm, generally with 4–6 whorled leaves below inflorescence, pair near mid-stem. Leaf: 2.5–7 cm, elliptic to obovate, glabrous to strigose. Inflorescence: head-like, 1, 2–4 cm, slender; bracts 4, 0.8–1.6 cm, ovate, showy, ± white, persistent. Flower: sepals 0.4 mm; petals 1.5 mm, ± yellow or ± purple; style 1.5–2 mm. Fruit: ± 8 mm, spheric, red; stone smooth.
Moist forest, bogs; 1100 m. Northwestern California; to Alaska, eastern North America; northeastern Asia. May–Jul [Online Interchange]
Previous taxon: Cornus
Next taxon: Cornus glabrata
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Aug 28 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=20389, accessed on Aug 28 2014
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© 1995 Saint Mary's College of California
|Geographic subdivisions indicated for the distribution of Cornus canadensis|| 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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