Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



John O. Sawyer, Jr. (except Ceanothus)

Shrub, vine, tree, generally erect, often thorny
Leaves simple, generally alternate, often clustered on short-shoots, generally petioled, generally stipuled; blade often 1–3-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 2–5, each 1–2-ovuled, style lobes or parts 1–3
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 45:439–463]



Clifford L. Schmidt

Shrub, small tree, prostrate to erect, thorny or not
Stem: branches generally arranged as leaves
Leaves alternate or opposite, deciduous or evergreen, petioled; blade 1–3-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 1–308]
Hybridization common (named hybrids not recognized here); hybrid forms may not key adequately.


C. cuneatus (Hook.) Nutt.

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 ± 0–3 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 4–6 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


var. fascicularis (McMinn) Hoover

Plant erect, 6–15 dm
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
Flower blue
Fruit 4–5 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.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for CEANOTHUS%20cuneatus%20var.%20fascicularis being generated

Retrieve Jepson Interchange Index to Plant Names entry for Ceanothus cuneatus var. fascicularis
Retrieve dichotomous key for Ceanothus
Overlay Consortium of California Herbaria specimen data by county on this map
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