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

Apocynaceae - Asclepiadoideae - Marsdenieae - Stigmatorhynchus Schltr.

Description :

  • Shrublets or shrubs, stiffly twiggy
  • Leaves shortly petiolate, ± spatulate, shortly pubescent
  • Flowers small, few together in subsessile or shortly pedicellate, extra-axillary umbels or fascicles
  • Calyx much shorter than corolla, puberulous, 5-parted
  • Corolla narrowly campanulate, 5-lobed to about middle, glabrous outside, bearded within
  • Corona of 5 fleshy lobes arising from and adnate to staminal column, with free tips
  • Staminal column arising from base of corolla, elongate, subcylindric; carpels 2-ovulate
  • Anthers with a cartilaginous margin, terminated by membranous appendages which are applied to base of elongated beak; pollinia small, ± ellipsoid, erect-inclined, with short, slender caudicles and a small corpuscle
  • Fruit of 2 one-seeded follicles

Nomenclature:

  • Stigmatorhynchus Schltr.
    • Schlechter: 141 (1913)
    • Bullock: 373 (1954)
    • Huber: 65 (1967)

Distribution & Notes:

  • Global : Species 3, Africa
  • Southern Africa : Species 1: Stigmatorhynchus hereroensis Schltr., Namibia

References:

  • BULLOCK, A.A. 1954. Notes on African Asclepiadaceae : IV. Kew Bulletin 10
  • HUBER, H. 1967. Asclepiadaceae . Prodromus einer Flora von Südwestafrika 114
  • SCHLECHTER, F.R.R. 1913. Asclepiadaceae africanae. Botanische Jahrbücher 51