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CELASTRACEAE STAFF-TREE FAMILY

Michael A. Vincent & Barry A. Prigge

Shrub (climbing or not), tree, thorny or not, generally glabrous. Leaf: simple, opposite or alternate, deciduous to persistent, subsessile or petioled; veins pinnate. Inflorescence: cluster, cyme, raceme, panicle, or 1-flowered, axillary or terminal, bracted. Flower: generally bisexual, radial, small; hypanthium ± cup-shaped; sepals 4–5; petals (0)4–5, free; stamens 4–5, alternate petals, attached below or to rim of disk; ovary superior or ± embedded in disk, 2–5-chambered, placentas axile or basal, style generally 1, short, stigma ± head-like, 2–5-lobed. Fruit: capsule, winged achene, berry, drupe, or nutlet, often 1-chambered. Seed: generally 1 per chamber, arilled.
50 genera, 800 species: worldwide, especially southeastern Asia; some ornamental (Celastrus, Euonymus, Maytenus, Paxistima). [Zhang & Simmons 2006 Syst Bot 31:122–137] —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Brizicky 1964 J Arnold Arbor 45:206–234]

Key to Celastraceae

EUONYMUS BURNING BUSH
Shrub, small tree, erect. Stem: twig generally 4-angled, with corky ridges. Leaf: opposite, deciduous, generally scalloped or finely toothed. Inflorescence: axillary, few-flowered; pedicel jointed to peduncle. Flower: parts in 5s; petals purple-brown [or ± green]; disk fused to hypanthium, flat, ± 5-lobed; stamens short, attached to disk margin; ovary embedded in disk, bumpy or warty or not, style 0 or short, stigma lobes 3–5, obscure. Fruit: capsule, loculicidal, 3–5-valved. Seed: brown [white, red, or black], enclosed by [orange] red aril.
180 species: especially tropical southern hemisphere. (Greek: good name)
Unabridged references: [Blakelock 1961 Kew Bull 210–290]

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 22 2014
Citation for this treatment: [Author of taxon treatment] 2013. Euonymus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=9802, accessed on Dec 22 2014

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