|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
previous taxon |
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.
Perennial, shrubs, trees, sometimes dioecious
Leaves generally opposite, simple, generally entire, generally deciduous; stipules 0
Inflorescence: cyme or racemes, generally umbel- or head-like, sometimes subtended by showy, petal-like bracts
Flower generally small, generally bisexual; calyx generally 4-lobed; petals 0 or 4(5), free; stamens generally as many as and alternate petals; ovary inferior, chambers 14, each 1-ovuled, style simple, stigma 14-lobed
Fruit: generally drupe or berry
Seeds generally 12
Genera in family: ± 12 genera, ± 100 species: especially n temp (also s tropical, subtropical). Cult as ornamental (Cornus, Aucuba ); some timber species. Genera diverse; many have been treated as constituting families, but trend is to treat Cornaceae broadly
Reference: [Eyde 1987 Syst Bot 12:505518]
Perennial, shrubs, trees
Leaves generally opposite or whorled, simple, generally deciduous; both ends generally tapered
Inflorescence small, head- or umbel-like, and surrounded by showy bracts (or cyme, large, open, lacking showy bracts)
Flower generally minute; sepals 4, fused at base; petals 4; stamens 4, attached to receptacle; style 1, thread-like, stigma simple
Fruit: drupe; stone 12-chambered
Species in genus: ± 50 species: n temp (rare in s hemisphere); many cultivated as ornamental, some for autumn color. Some fruit used for jam, syrup
Etymology: (Latin: horn, from the hard wood)
Divided by some into at least 6 genera.
Tree < 25 m
Stem: twigs green; bark becoming dark red to almost black, hairy
Leaves deciduous; blade 612 cm, narrowly elliptic to obovate, appressed-puberulent above, paler and hairier beneath; petioles 510 mm
Inflorescence: head; subtending bracts 47, 46 cm, 36 cm wide, showy, petal-like, white to pinkish; receptacle convex
Flower: sepals 2.5 mm; petals 4 mm, greenish to white; style 2 mm
Fruit 11.5 cm, elliptic in outline, generally angled from crowding, red; stone smooth
Elevation: < 2000 m.
Bioregional distribution: California Floristic Province (less common in s California)
Distribution outside California: to British Columbia, Idaho
Horticultural information: DRN: 4, 5 &IRR : 6, &SHD: 1, 2, 7, 14, 15, 16, 17, 22, 23; DFCLT.
|YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).|