e-Key v3 - Eriosema
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Fabaceae - Papilionoideae - Phaseoleae - Cajaninae - Eriosema (DC.) G.Don

Description :

  • Perennial herbs suffrutices or shrubs, erect, prostrate, or rarely climbing
  • Leaves pinnately (1)3-foliolate, often exstipellate, resinous-dotted on lower surface, rarely above; stipules triangular or lanceolate, free or connate, leaf-opposed
  • Flowers pale pink, or yellow, or red and yellow, or red, orange and yellow, in axillary racemes, rarely solitary
  • Calyx with campanulate tube oblique at base, hairy, 5-lobed; lobes longer or shorter than tube, subequal, rarely 2 upper shortly connate
  • Petals : vexillum variously oblong or obovate, with deeply channelled claw, usually inflexed-eared; wings usually shorter than keel and partially adnate to it, usually eared and clawed; keel slightly incurved at apex, clawed
  • Stamens diadelphous, with vexillary filament curved or bulbous-kneed at base
  • Ovary sessile or stalked, usually with basal, cupular disc, usually 2-ovuled, villous; style usually slightly thickened above, with capitate stigma
  • Pod compressed, 2-valved, broadly oblong to rhomboidal, obliquely beaked, variously clothed with long hairs
  • Seeds (1)2, compressed, reniform or oblong; funicle attached to one end of hilum
  • x = 11

Nomenclature:

  • Eriosema (DC.) G.Don
    • Don: 237 (1832) name conserved
    • Harvey: 258 (1862)
    • Grear: 17 (1970)
    • Verdcourt: 761 (1971)

Distribution & Notes:

  • Global : Species ± 130, fairly cosmopolitan in tropical and subtropical regions
  • Southern Africa : Species ± 36, widespread

References:

  • DON, G. 1832. A general system of gardening & botany 2. Rivington, London
  • GREAR, J.W. 1970. A revision of the American species of Eriosema ( Leguminosae - Lotoideae ). Memoirs of the New York Botanical Garden 20,3
  • HARVEY, W.H. 1862. Leguminosae . Flora capensis 2
  • VERDCOURT, B. 1971. Flora of tropical East Africa . Leguminosae (part 4). Papilionoideae