|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
[Perennial herb] shrub, tree, generally erect, often thorny. Leaf: simple, generally alternate, often clustered on short-shoots; stipules generally present, occasionally modified into spines; generally petioled; blade pinnate-veined or 1–5-ribbed from base. Inflorescence: cyme, panicle, umbel, or flowers 1 or clustered in axils or on short-shoots. Flower: generally bisexual, radial; hypanthium subtending, surrounding, or partly fused to ovary; sepals 4–5; petals 0, 4–5, generally clawed; stamens 0, 4–5, alternate sepals, attached to hypanthium top, each generally fitting into a petal concavity; disk (0 or) between stamens, ovary, thin to fleshy, entire or lobed, free from ovary, adherent or fused to hypanthium; ovary superior or ± inferior, chambers 2–4, 1–2-ovuled, style 1, stigma entire or 2–3-lobed. Fruit: capsule, drupe.
50–52 genera, 950 species: especially tropics, subtropics some cultivated (Ceanothus; Frangula; Rhamnus; Ziziphus). [Richardson et al. 2000 Amer J Bot 87:1309–1324] —Scientific Editors: Steve Boyd, Thomas J. Rosatti.
Unabridged references: [Brizicky 1965 J Arnold Arbor 45:439–463; Richardson et al. 2000 Kew Bull 55:311–341]
Key to Rhamnaceae
Tree, shrub [vine]. Stem: branches alternate, flexible or stiff, ± 2–3-ranked; twigs ± pendent, zigzag. Leaf: clustered on short-shoots or not, deciduous or not, petioled; stipules ± spine-like or not, unequal; blade elliptic to obovate, ± entire to serrate, 1–5-ribbed from base. Inflorescence: cyme or small panicle. Flower: hypanthium surrounding base of ovary; sepals 5; petals 5, < to > sepals; stamens 5; disk thick, ± obscuring ovary in early flower; ovary widely attached at base, chambers 2, each 1-ovuled, stigma 2-lobed. Fruit: drupe, stone 1.Key to Ziziphus
100 species: generally tropics. (Latin: from Arabic "zizouf", common jujube, Ziziphus zizyphus) [Islam & Simmons 2006 Syst Bot 31:826–842]
Unabridged references: [Johnston 1963 Amer J Bot 50:1020–1027]
Shrub, < 3 m. Stem: bark gray, smooth; twigs 1–8 cm, stiff, spreading, thorn-tipped, densely short-white-hairy. Leaf: deciduous; stipules brown; blade 2–20 mm, ovate or oblong, firm, dull gray, margin entire or teeth 2–10, glandular. Inflorescence: 2–30-flowered. Flower: hypanthium 1.5–2 mm wide, olive-green, glabrous to tomentose; sepals ± yellow to ± orange or ± purple; petals white; pistil olive-green. Fruit: fleshy, 7–10 mm, not beaked, blue-black.
Uncommon. Desert scrub; 45–1250 m. Desert; Arizona, Nevada, Utah, Mexico. 1 other var., in New Mexico, Oklahoma, Texas, Mexico. Apr–Jun [Online Interchange]
Unabridged synonyms: [Condalia lycioides var. canescens (A. Gray) Trel.]
Unabridged note: Ziziphus obtusifolia var. obtusifolia in New Mexico, Oklahoma, Texas, Mexico. Expanded author citation: Ziziphus obtusifolia (Hook. ex Torr. & A. Gray) A. Gray var. canescens (A. Gray) M.C. Johnst.
Previous taxon: Ziziphus
Next taxon: Ziziphus parryi var. parryi
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 9 2014
Citation for this treatment: [Author of taxon treatment] 2012. Ziziphus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=67917, accessed on Mar 9 2014
Copyright © 2013 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.
|Ziziphus obtusifolia var. canescens|
See CalPhotos for additional images
© 2012 Neal Kramer
|Bioregions in which Ziziphus obtusifolia var. canescens occurs|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
|View elevation by latitude chart|| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records
CCH collections by month