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

Malvaceae - Hibisceae - Radyera Bullock

Description :

  • Perennial herbs, prostrate with dense, stellate, irritant hairs
  • Leaves ovate or suborbicular, cordate, prominently veined on undersurface, rugose above
  • Flowers axillary, 2-4-nate
  • Epicalyx of 12 linear, tomentose bracts connate at base
  • Calyx campanulate; lobes shorter than tube, accrescent
  • Petals about as long as calyx, flame-red to crimson
  • Staminal tube shorter than petals, truncate at apex, bearing horseshoe-shaped anthers in upper half
  • Gynoecium 5-locular, with several ovules per locule; style undivided, terete, capitate, with stigma 5-grooved
  • Fruit a loculicidally dehiscent capsule
  • Seeds glabrous

Nomenclature:

  • Radyera Bullock
    • Bullock: 454 (1957)
    • Exell: 28 (1969)
  • Allenia Phillips
    • Phillips: 33 (1944)
    • Phillips: 500 (1951) not of Ewart

Distribution & Notes:

  • Global : Species 2, Australia and southern Africa
  • Southern Africa : Species 1: Radyera urens (L.f.) Bullock, S Namibia and arid to semi-arid central South Africa: North-West, Free State, Northern, Western and Eastern Cape

References:

  • BULLOCK, A.A. 1957. Radyera nom. nov. Kew Bulletin 1956
  • EXELL, A.W. 1969. Malvaceae (in part). Prodromus einer Flora von Südwestafrika 82
  • PHILLIPS, E.P. 1944. Allenia , new genus. Journal of South African Botany 10
  • PHILLIPS, E.P. 1951. The genera of South African flowering plants. Memoirs of the Botanical Survey of South Africa No. 25