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Key to families | Table of families and genera
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Perennial herb, shrub, tree, generally fleshy. Stem: cylindric to spheric, or flat; surface smooth, tubercled, or ribbed (grooved); nodal areoles bearing flowers. Leaf: generally 0 or early-deciduous, flat to ± cylindric. Spines: areoles generally with central, radial spines, occasionally with glochids. Flower: generally 1 per areole, bisexual [unisexual], sessile, radial [bilateral]; perianth parts generally many , scale-like to petal-like; stamens many; ovary inferior [superior], style 1, stigma lobes generally several [many]. Fruit: dry to fleshy or juicy, indehiscent to variously dehiscent, spiny, scaly, or naked; tubercled or smooth. Seed: generally many, occasionally 0–few.
± 125 genera, ± 1800 species: America (especially deserts), Africa; many cultivated, some edible. [Parfitt & Gibson 2004 FNANM 4:92–257] Spines smaller, fewer (0) in shade forms; yellow spines blacken in age. Introduced species increasingly escape cultivation. Hybridization common in some genera. Taxa of Escobaria in TJM (1993) moved to Coryphantha. —Scientific Editors: Bruce D. Parfitt, Douglas H. Goldman, Bruce G. Baldwin.
Unabridged references: [Hunt 2006 The New Cactus Lexicon, DH Books, Milborne Port, England]
Key to Cactaceae
Shrub or small tree, erect to decumbent, many-branched. Stem: regularly segmented, segments generally < 50 cm, < 5 cm diam, cylindric, fleshy, glabrous; ribs generally 0; tubercles generally elongate. Leaf: deciduous. Spines: 1–many per areole, < 2 mm diam, generally needle-shaped, smooth, straight, tip smooth or barbed, epidermis separating as a papery sheath; central spines generally not distinct from radial spines; glochids generally numerous in each areole. Flower: lateral to terminal, from distal portion of areole, 1.8–8 cm diam; perianth yellow, green-yellow, orange-yellow, to bronze, pink, or red; ovary glabrous, spines 0–many, glochids many in each areole, scales 0. Fruit: indehiscent; spheric or cylindric to obconic, dry or fleshy to leathery in age, green to dark yellow, glabrous, spiny or spines 0. Seed: 1.9–7 mm, flattened to ± spheric, surface smooth to angular, within an aril, bony and ± white when dry.Key to Cylindropuntia
35 species: America. (Cylindric Opuntia) [Pinkava 2002 Succ Plant Res 6:59–98] Hybridization common. Young buds of some species used as for food, many species for ornamental.
Unabridged references: [Rebman & Pinkava 2001 Florida Entomol 84:474–483]
Plant < 4 m. Stem: trunk generally 1; main branches spreading to erect, few to several, generally long; terminal segments < 50 cm, 2–2.5 cm diam, firmly attached; tubercles 20–40 mm, < 7 mm high. Spines: 12–21, < 5 cm, pale yellow- to red-brown, sheath pale yellow-brown. Flower: inner perianth < 3.5 cm, yellow, tinted purple to brown-red; filaments purple-red. Fruit: dry, tubercled, proximal tubercles >> distal; base acute; spiny. Seed: < 6 mm, generally fertile.
2n=22. Creosote-bush scrub, Joshua-tree woodland; < 1600 m. Desert; Nevada, Arizona. [Opuntia acanthocarpa Engelm. & J.M. Bigelow var. coloradensis L.D. Benson] Cylindropuntia ×deserta (Griffiths) Pinkava, probably Cylindropuntia acanthocarpa × Cylindropuntia echinocarpa. May–Jun [Online Interchange]
Previous taxon: Cylindropuntia
Next taxon: Cylindropuntia bigelovii
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 21 2014
Citation for this treatment: [Author of taxon treatment] 2012. Cylindropuntia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=80392, accessed on Apr 21 2014
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