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

Apocynaceae - Apocynoideae - Wrightieae - Wrightia R.Br.

Description :

  • Trees or shrubs
  • Leaves opposite, entire or faintly crenate, shortly petiolate, lanceolate or ovate-lanceolate; stipules 0
  • Inflorescence a terminal or pseudoaxillary cyme
  • Flowers small to rather large, usually scented
  • Calyx divided almost to base, glandular within; sepals imbricate, ovate
  • Corolla ± salver-shaped; tube cylindric, usually short, with variously divided or entire, connate or free appendages in throat (rarely without); lobes longer than tube, overlapping to the left
  • Stamens inserted in mouth of corolla; filaments short, stout, with tuft of hairs at back; anthers 4-locular, conniving in a cone, exserted, lanceolate, acute to acuminate, sagittate, with a small, projecting appendage from foot of connective
  • Disc a narrow rim or 0
  • Ovary of 2 free carpels; style filiform; stigma capitate with small or obscure frill at base and minute, cleft tip
  • Mericarps 2, follicular, cylindric or spindle-shaped, subparallel
  • Seeds cylindric or spindle-shaped, glabrous except for basal tuft of hairs
  • x = 11

Nomenclature:

  • Wrightia R.Br.
    • Brown: 73 (1811)
    • Stapf: 508 (1907)
    • Codd: 295 (1963)
    • Leeuwenberg: 480 (1985)
  • Balfouria R.Br.
    • Brown: 70 (1811).
  • Anasser Blanco
    • Blanco: 112 (1837) non Juss. (1789).
  • Piagiaea Chiov.
    • Chiovenda: 290 (1932).
  • Walidda Pichon
    • Pichon: 87 (1951).
  • Scleranthera Pichon
    • Pichon: 88 (1951)

Distribution & Notes:

  • Global : Species 23, Old World, 2 in Africa
  • Southern Africa : Species 1: Wrightia natalensis Stapf, Northern Province, Mpumalanga, Swaziland and KwaZulu-Natal

References:

  • BLANCO, F.M. 1837. Anasser . Flora de Filipinas 1. Lopez, Manilla
  • BROWN, R. 1810. On the Asclepiadeae, a natural order of plants separated from the Apocineae of Jussieu. Memoirs of the Wernerian Natural History Society 1
  • CHIOVENDA, E. 1932. Piagiaea . Flora Somala 2
  • CODD, L.E. 1963. Apocynaceae . Flora of southern Africa 26
  • LEEUWENBERG, A.J.M. 1985. Apocynaceae : Tabernaemontana , Voacanga and Wrightia . Flora zambesiaca 7,2
  • PICHON, M. 1951. Classification des Apocynacées: XIII. Genre Wrightia et genres voisins. Notulae systematicae 14
  • STAPF, O. 1907. Apocynaceae . Flora capensis 4,1