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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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[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, < 4 m. Stem: bark gray to brown, smooth; branches pale green-yellow to ± purple; twigs 1.3–3 cm, stiff, spreading, thorn-tipped, with 1 node, 1 short-shoot, glabrous. Leaf: deciduous, membranous; stipules brown; blade 10–25 mm, elliptic to obovate, dull olive-green, margin ± entire. Inflorescence: 2–4-flowered. Flower: hypanthium 2–2.2 mm wide, purple-green, glabrous; sepals green; petals white; pistil green. Fruit: dry, 10–25 mm, beaked, brown.
Uncommon. Chaparral; 15–1220 m. South Coast, San Bernardino Mountains, Peninsular Ranges, Mojave Desert, w edge Sonoran Desert; Mexico. 1 other var., in Baja California including Cedros Island. Feb–Apr [Online Interchange]
Unabridged synonyms: [Condalia parryi (Torr.) Weberb.]
Unabridged note: Ziziphus parryi var. microphylla (I.M. Johnst.) M.C. Johnst. in Baja California including Cedros Island.
Previous taxon: Ziziphus obtusifolia var. canescens
Next taxon: Ziziphus zizyphus
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jul 22 2014
Citation for this treatment: [Author of taxon treatment] 2013. Ziziphus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=77251, accessed on Jul 22 2014
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|Ziziphus parryi var. parryi|
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© 2004 Michael Charters
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