|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Shrub, vine, tree, generally erect, often thorny
Leaves simple, generally alternate, often clustered on short-shoots, generally petioled, generally stipuled; blade often 13-ribbed from base
Inflorescence: cyme, panicle, or flowers solitary in axils
Flower generally bisexual, radial; hypanthium subtending, surrounding, or partly fused to ovary; sepals 4 or 5; petals 0, 4, or 5, clawed; stamens 4 or 5, alternate sepals, attached to hypanthium top, each generally fitting into a petal concavity; ovary superior or partly inferior, chambers 25, each 12-ovuled, style lobes or parts 13
Fruit: capsule, drupe
Genera in family: 55 genera, 900 species: especially tropical, subtropical; some cultivated (Ceanothus ; Colletia , anchor-plant; Gouania ; Phylica ; Rhamnus ; Ventilago ; Ziziphus )
Reference: [Brizicky 1965 J Arnold Arbor 45:439463]
Shrub, small tree, prostrate to erect, thorny or not
Stem: branches generally arranged as leaves
Leaves alternate or opposite, deciduous or evergreen, petioled; blade 13-ribbed from base, margin entire or not
Inflorescence: generally panicle-like aggregations of umbel-like, 3-flowered clusters
Flower generally < 5 mm; hypanthium surrounding fleshy disk below ovary base, in fruit thick, not splitting; sepals generally 5, lanceolate-deltate, incurved, colored like petals, persistent; petals generally 5, hooded, white to deep blue; stamens generally 5, opposite petals; ovary superior, 3-lobed, chambers 3, each 1-ovuled, style parts 3
Fruit: capsule, ± spheric, 3-valved
Seeds 3, ± 3 mm, 1 surface convex
Species in genus: 45 species: North America, especially w
Etymology: (Greek: thorny plant)
Reference: [Rensselaer & McMinn 1942 Ceanothus Santa Barbara Bot Gard 1308]
Hybridization common (named hybrids not recognized here);hybrid forms may not key adequately.
Plant prostrate to erect, < 3 m
Stem: twigs round, gray to brown, generally glabrous, becoming gray
Leaves opposite, clustered or not, evergreen, < 3.2 cm, flat; stipules persistent; petiole ± 03 mm; blade oblong, oblanceolate, or obovate to roundish, 1-ribbed from base, firm, tip obtuse to notched, margin entire or with spine-like teeth, upper surface dull to shiny green, ± glabrous, lower surface ± hairy on veins
Inflorescence raceme-like, < 2.5 cm
Flower white, pale blue, blue, or lavender
Fruit 46 mm, generally with horns near top; ridges 0 or minute
Ecology: Dry fans, slopes, ridges
Elevation: < 1800 m.
Bioregional distribution: California Floristic Province (except Great Central Valley)
Distribution outside California: Oregon, n Baja California
Plant erect, 615 dmSee the CNPS Inventory for information about endangerment and rarity.
Stem: twigs brown, becoming dark brown
Leaves clustered, < 2 cm; petiole < 3 mm; blade narrowly oblanceolate, margin entire or few-toothed near tip, upper surface generally dull green, glabrous, lower minutely canescent
Fruit 45 mm; horns generally minute; ridges 0
Ecology: Chaparral, coastal sandy mesas
Elevation: < 400 m.
Bioregional distribution: s Central Coast (Santa Barbara, San Luis Obispo cos.).[C. ramulosus (Greene) McMinn var. f. McMinn]
Horticultural information: DRN, DRY, SUN: 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.