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

Turneraceae - Streptopetalum Hochst.

Description :

  • Small glandular-pubescent annuals or perennials becoming woody at base
  • Leaves sessile, serrate; stipules 0
  • Flowers in few-flowered axillary racemes
  • Calyx forming a long, narrow tube, hairy on outside and within in lower half
  • Petals convolute in bud, arising in throat of calyx, spathulate, yellow or orange
  • Stamens perigynous, equal, or unequal in length, reaching to mouth of tube
  • Ovary oblong-ovoid, pubescent; ovules pluriseriate; styles filiform, just over-topping stamens
  • Capsule ellipsoid, splitting to base, glandular-hispid
  • Seeds sausage-shaped; testa reticulate, pits with 2 pores; aril unilateral, as long as, or shorter than seed, with a wavy margin

Nomenclature:

  • Streptopetalum Hochst.
    • Hochstetter: 665 (1841)
    • Urban: 55 (1883)
    • Schreiber: 2 (1968)
    • Obermeyer: 98 (1976)

Distribution & Notes:

  • Global : Species 3, African
  • Southern Africa : Species 1: Streptopetalum serratum Hochst., recorded from Ethiopia to Namibia, Botswana, Northern Province and Mpumalanga

References:

  • HOCHSTETTER, C.F. 1841. Nova genera plantarum. Flora 42
  • OBERMEYER, A.A. 1976. Turneraceae . Flora of southern Africa 22
  • SCHREIBER, A. 1968. Turneraceae . Prodromus einer Flora von Südwestafrika 88
  • URBAN, I. 1883. Turneraceae . Jahrbuch des Königlichen Botanischen Gartens und des Botanischen Museums zu Berlin 2