e-Key <span id="jodit_selection_marker_1710326323958_885044618319488" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Jat<span id="jodit_selection_marker_1710326323958_5978982681540572" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>ropha
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Euphorbiaceae - Crotonoideae - Jatropheae - Jatropha L.

Description:

  • Perennial herbs or shrubs; monoecious, rarely dioecious
  • Leaves alternate, petiolate or subsessile, from simple to digitately lobed, rarely pinnately lobed; stipules various
  • Inflorescence a terminal, dichotomous cyme with lateral male flowers and terminal, solitary, female flowers
  • Male flowers: sepals usually 5, imbricate, often shortly connate at base, often with stalked glands on margin; petals 5, free or shortly connate at base, rarely obsolete; disc of 5 free glands, sometimes annular; stamens 6-10, rarely more, in 2 series; filaments connate at base; pistil 0
  • Female flowers: sepals, petals and disc as in male flowers; ovary glabrous or hairy, (1)2 or 3(-5)-locular, with a single ovule in each locule; styles free or connate at base, often bifid; stigmas laminated
  • Fruit a schizocarpic capsule, ovoid or subglobose, breaking septicidally or loculicidally into 3 bivalved cocci, rarely subdrupaceous and ± indehiscent; endocarp crustaceous or indurated
  • Seeds ovoid or oblong, carunculate, caruncle often much divided; testa crustaceous; albumen fleshy; cotyledons broad, flat
  • x = 11

Nomenclature:

  • Jatropha L.
    • Linnaeus: 1006 (1753)
    • Prain: 418 (1920)
    • Radcliffe-Smith: 343 (1987
    • Radcliffe-Smith: 141 (1991)
    • Webster: 103 (1994)
    • Radcliffe-Smith: 253 (1996)

Distribution & Notes:

  • Global: Species ± 156, cosmopolitan in tropics and subtropics
  • Southern Africa: Species ± 19, widespread

References:

  • LINNAEUS, C. 1753. Species plantarum, edn 1. Laurentius Salvius, Stockholm
  • PRAIN, D. 1920. Euphorbiaceae [in part]. Flora capensis 5, 2
  • RADCLIFFE-SMITH, A. 1987. Euphorbiaceae. Flora of tropical East Africa. Euphorbiaceae Part 1
  • RADCLIFFE-SMITH, A. 1991. Notes on African Euphorbiaceae, XXV: Jatropha. Kew Bulletin 46
  • RADCLIFFE-SMITH, A. 1996. Euphorbiaceae. Flora zambesiaca 9, 4
  • WEBSTER, G.L. 1994. Synopsis of the genera and suprageneric taxa of Euphorbiaceae. Annals of the Missouri Botanical Garden 81