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

Poaceae - Bambusoideae - Bambuseae - Melocanninae - Oxytenanthera Munro

Description :

  • Perennial, tufted, with woody culms; culm sheath blades narrow
  • Leaf blade linear-lanceolate to lanceolate, pseudopetiolated, expanded, deciduous from sheath
  • Inflorescence a dense, spiny, globose cluster of spikelets at tips of leafy branchlets, each spikelet cluster subtended by a short-bladed papery sheath, and individual spikelets subtended by several short papery bracts
  • Spikelet falling entire at maturity; glumes unequal, 17-30-nerved with cross-nerves connecting them
  • Florets 1-4; lower florets male or sterile; upper florets bisexual; lemma 11-23-nerved with cross-nerves, apically awned; palea 16-19-nerved
  • Lodicules usually 0
  • Stamens 6; filaments united
  • Ovary glabrous; apical appendage long, stiff and tapering
  • x = 12 (polyploidy)

Nomenclature:

  • Oxytenanthera Munro
    • Munro: 126 (1868)
    • Henkel: 244 (1927)
    • Clayton: 11 (1970)
    • Clayton & Renvoize: 56 (1986)
    • Gibbs Russell et al.: 232 (1990)
    • Watson & Dallwitz: 683 (1994)

Distribution & Notes:

  • Global : Species 1: Oxytenanthera abyssinica (A.Rich.) Munro, Africa
  • Southern Africa : Specimens from Northern Province resemble this species vegetatively but until flowering material is obtained the identification will remain tentative

References:

  • CLAYTON, W.D. 1970. Flora of tropical East Africa . Gramineae (Part 1)
  • CLAYTON, W.D. & RENVOIZE S.A. 1986. Genera graminum. Grasses of the world. Kew Bulletin . Additional series 13
  • GIBBS RUSSELL, G.E., WATSON, L., KOEKEMOER, M., SMOOK, L., BARKER, N.P., ANDERSON, H.M. & DALLWITZ. M.J. 1990. Grasses of southern Africa. Memoirs of the Botanical Survey of South Africa No. 58
  • HENKEL, J.S. 1927. Oxytenanthera , occurrence, gregarious flowering and natural regeneration in Southern Rhodesia. South African Journal of Science 24
  • MUNRO, W. 1868. A monograph ot the Bambusaceae , including descriptions of all the species. Transactions of the Linnean Society 26
  • WATSON, L. & DALLWITZ, M.J. 1994. The grass genera of the world , revised edn. CAB International, Oxon