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

Rubiaceae - Antirheoideae - Vanguerieae - Vangueriopsis Robyns

Description :

  • Scandent shrubs or small trees, with or without spines, usually with stiff, thick branches
  • Leaves petiolate, oblong, elliptic or ovate, glabrous or hairy; stipules thick, triangular, connate at base into a sheath, long-caudate at apex
  • Flowers in opposite, simple to much-branched, many-flowered, axillary cymes; bracts conspicuous; buds elongate-lanceolate, beaked
  • Calyx 5-partite, segments erect, ovate to linear
  • Corolla 5-lobed, green, densely villous; lobes reflexed, long, linear; tube cylindric to somewhat campanulate, with ring of deflexed hairs within, rarely glabrous; throat glabrous
  • Stamens 5, arising in corolla mouth, exserted; filaments usually shorter than linear anthers
  • Disc annular, tumid
  • Ovary 2-locular, with a single pendulous ovule in each locule; style much exserted; stigmatic knob widely cylindric, 2-lobed
  • Fruit a subglobose drupe with 1 or 2 pyrenes
  • x = 11 (polyploidy)

Nomenclature:

  • Vangueriopsis Robyns
    • Robyns: 248 (1928)
    • Launert: 27 (1966)
    • Verdcourt & Bridson: 773 (1991)
    • Bridson: 304 (1998)

Distribution & Notes:

  • Global : Species 18, tropical Africa
  • Southern Africa : Species 1: Vangueriopsis lanciflora (Hiern) Robyns ex Good, Namibia

References:

  • BRIDSON, D.M. 1998. Rubiaceae . Flora zambesiaca 5,2
  • LAUNERT, E. 1966. Rubiaceae . Prodromus einer Flora von Südwestafrika 115
  • ROBYNS,W. 1928. Monographieae Vangueriae . Bulletin du Jardin Botanique de l'Etat, à Bruxelles 11
  • VERDCOURT, B. & BRIDSON, D.M. 1991. Flora of tropical East Africa . Rubiaceae (part 3)