|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
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 erect, often tree-like, < 3 m
Stem: twigs round, warty or smooth, not changing color
Leaves alternate, evergreen, < 4 cm; stipules deciduous; petiole < 8 mm; blade ovate, elliptic, to elliptic-oblong, 3-ribbed from base, tip obtuse or acute, margin minutely gland-toothed, upper surface dark green, lower paler, hairy, especially on veins
Inflorescence panicle- or raceme-like
Fruit ± 4 mm, generally sticky, 3-lobed; valves ± crested
Ecology: Dry, shrubby slopes
Elevation: < 1300 m.
Bioregional distribution: North Coast Ranges, San Francisco Bay Area, South Coast Ranges, Transverse Ranges, Peninsular Ranges.
Stem: twigs generally gray-green, ± glabrous to puberulent
Leaf: blade upper surface ± glabrous
Inflorescence continuous, < 4 cm
Flower pale to deep blue
Fruit smooth, barely lobed or crested, glabrous
Ecology: Habitats of sp.
Elevation: < 1000 m.
Bioregional distribution: North Coast Ranges, San Francisco Bay Area, South Coast Ranges, Transverse Ranges
Synonyms: C. s. Hook. & Arn
Horticultural information: DRN, DRY: 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.