|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
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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, < 2 m
Stem: twigs round, ± pale green, often glandular-hairy, becoming gray
Leaves alternate, evergreen, < 2 cm; stipules deciduous; petiole < 3 mm; blade narrowly oblong to widely elliptic or obovate, generally 1-ribbed or faintly 3-ribbed from base, tip obtuse, margin generally minutely gland-toothed, upper surface dull to dark green, puberulent, lower paler, hairy or not
Inflorescence generally raceme-like, 38 cm
Fruit generally 4 mm, smooth, faintly lobed; valves ± crested
Ecology: Dry slopes
Elevation: < 1500 m.
Bioregional distribution: Outer North Coast Ranges, San Francisco Bay Area, South Coast Ranges, Peninsular Ranges.
Plant ± prostrate to ascending, < 8 dmSee the CNPS Inventory for information about endangerment and rarity.
Leaf: blade widely elliptic to obovate, margin glands few, upper surface dark green, hairs sparse, lower paler, hairs scattered on veins, fewer between
Ecology: UNCOMMON. Dry, rolling hills
Elevation: < 300 m.
Bioregional distribution: Outer North Coast Ranges
Horticultural information: DRN, DRY, SUN: 14, 15, 16, 17.