TREATMENT FROM THE JEPSON MANUAL (1993) |
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Jepson Interchange (more information) |
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©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora. |
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.
Native |
Plant prostrate to erect, < 2 m
Stem: twigs angled, green, red-brown, or brown, ± strigose or short-tomentose, becoming generally red-brown
Leaves opposite, evergreen, < 5 cm; stipules persistent; petiole < 4 mm; blade round to widely elliptic or oblong, 1-ribbed from base, firm, tip obtuse, truncate, or notched, margin dentate, teeth spine-like or not, upper surface dark green, glabrous, lower hairy on veins, canescent between
Inflorescence: raceme-like, < 2.5 cm
Flower deep blue to violet
Fruit generally 3.54.5 mm; horns minute, near top; ridges 0
Ecology: Sandy places, coastal bluffs, shrubby slopes, ridges
Elevation: < 500 m.
Bioregional distribution: North Coast, Outer North Coast Ranges, Central Coast, San Francisco Bay Area.
Native |
Plant erect, < 2 m
Stem: twigs angled, dark, generally strigose
Leaf 1.54 cm
Chromosomes: 2n=24
Ecology: Shrubby slopes, ridges, chaparral, coniferous forest
Elevation: < 500 m.
Bioregional distribution: North Coast, Outer North Coast Ranges, n San Francisco Bay Area
Horticultural information: DRN, SUN: 15, 16, 17 &IRR: 14, 18, 19, 20, 21, 22, 23, 24; CVS.