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]


Tree, shrub, vine
Stem: branches alternate, flexible, sometimes 2–3-ranked; twigs thorn-tipped
Leaves in part clustered on short-shoots, deciduous or evergreen, petioled; stipules sometimes unequal spines; blade ovate to oblong, 1–3-ribbed from base, ± entire to serrate
Inflorescence: cyme or small panicle
Flower: hypanthium surrounding base of ovary; sepals 5; petals 5, < or = sepals; stamens 5; ovary broadly attached at base, chambers 2, each 1-ovuled, styles 2
Fruit: drupe, stone 1
Species in genus: 100 species: generally tropical
Etymology: (Latin: reason for application obscure)
Reference: [Johnston 1963 Amer J Bot 50:1020–1027]


Z. obtusifolia (Torr. & A. Gray) A. Gray var. canescens (A. Gray) M.C. Johnst.


Stem < 3 m; bark gray; twigs 1–8 cm, thorn-tipped, hairs short, dense, white
Leaves deciduous; blade 2–20 mm, ovate or oblong, firm, gray, margin entire or teeth 2–10, glandular; stipules brown
Inflorescence 10–30-flowered
Flower: hypanthium 1.5–2 mm, olive, glabrous to tomentose; sepals = petals, yellowish; stamens < petals; pistil olive
Fruit juicy
Ecology: Uncommon. Creosote-bush scrub
Elevation: < 1000 m.
Bioregional distribution: Sonoran Desert
Distribution outside California: Arizona, Mexico
Flowering time: Apr–Jun
Synonyms: Condalia lycioides (A. Gray) Weberb. var. c. (A. Gray) Trel
Horticultural information: DRN, DRY, SUN: 8, 9, 10, 11, 12, 13, 14, 16, 19, 20, 21, 22, 23.

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bioregional map for ZIZIPHUS%20obtusifolia%20var.%20canescens being generated

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