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

Apocynaceae - Asclepiadoideae - Asclepiadeae - Aspidoglossum E.Mey.

Description :

  • Perennial herbs with annual flowering shoots; sap milky
  • Stems erect or rarely ascending, branched or unbranched, with indumentum evenly distributed or in vertical lines
  • Leaves simple, entire, usually opposite, less often verticillate or irregularly inserted; petiole short or absent; lamina usually very narrowly linear, rarely elliptic, suborbicular, hastate or obovate, hairy or glabrous; margin revolute, in narrowly linear leaves usually only midrib visible on lower surface
  • Flowers in fascicles at distal nodes of stem; bracteoles inconspicuous; pedicels pilose
  • Calyx shorter than corolla; segments triangular, dorsally pilose, ventrally glabrous, margin ciliate
  • Corolla campanulate; lobes elliptic, spreading or rarely reflexed at anthesis, very rarely ( A. connatum ) tips remaining united; dorsal surface usually pilose, less often glabrous; ventral surface pubescent or pilose, indumentum variously distributed, or glabrous, left-hand margin glabrous, right-hand margin ciliate or glabrous
  • Corona : lobes alternating with petals, each representing a dorsal outgrowth from opposing stamen, delicate or slightly chartaceous, never fleshy
  • Stamens united at base to form a hollow column from which corona lobes arise
  • Anthers 2-locular, with a membranous apical appendage resting on style head, and horny anther wings
  • Pollinia pendulous, ± sausage-shaped; germination zone, when present, represented by a limited, thinner, transparent area at point of attachment to short, slender caudicle; corpuscle linear, not flanged (except in A. hirundo )
  • Follicles with or usually without soft appressed bristles
  • Seeds many, compressed-ovoid with dark brown rugose testa and apical tuft of hairs

Nomenclature:

  • Aspidoglossum E.Mey.
    • Meyer: 200 (1838)
    • Kupicha: 633 (1984)

Distribution & Notes:

  • Global : Species 34, distributed throughout southern and tropical Africa
  • Southern Africa : Species 22, mainly along eastern side of subcontinent

References:

  • KUPICHA, F.K. 1984. Studies on African Asclepiadaceae . Kew Bulletin 38
  • MEYER, E.H.F. 1838. Commentariorum de plantis Africae australioris . Voss, Leipzig