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

Poaceae - Arundinoideae - Arundineae - Pseudopentameris Conert

Description :

  • Perennial, tufted; culm erect, branched or simple
  • Leaf blade linear, rigid or soft, open and flat to rolled; sheaths appressed to culms; ligule a fringe of hairs
  • Inflorescence a panicle, somewhat contracted; spikelets pedicelled
  • Spikelet conspicuous, large, lanceolate, laterally compressed, disarticulating above glumes; glumes 15-60 mm long, ± equal, as long as to longer than spikelet, membranous, lanceolate, 3-5(7)-nerved, minutely scabrid, acuminate, awnless
  • Florets 2, bisexual; highly reduced third floret rarely present; lemma firmer in texture than glumes, chartaceous to cartilaginous, oblong, dorsally convex, variously hairy, 7-9-nerved, incised, 2-lobed, lobes with bristles or awns; awns not geniculate, central awn from between lobes very long, glabrous, scabrid, geniculate, twisted in lower part; callus elongated, slender, longer than lemma body, hairy; palea glabrous, narrowly lanceolate, apex bifid, 2-keeled, nerves prominent
  • Lodicules 2, glabrous or sparsely to densely ciliolate
  • Stamens 3
  • Ovary glabrous, with apical pseudostigmata; styles short or 0, plumose
  • Caryopsis surface reticulately sculptured
  • x = 6

Nomenclature:

  • Pseudopentameris Conert
    • Conert: 303 (1971)
    • Stapf: 516 (1899) under Danthonia DC.
    • Chippindall: 241 (1955) under Danthonia DC.
    • Clayton & Renvoize: 174 (1986)
    • Gibbs Russell et al.: 278 (1990)
    • Watson & Dallwitz: 787 (1994)
    • Barker: 141 (1995)

Distribution & Notes:

  • Southern Africa : Species 4, mountainous areas of Western Cape

References:

  • BARKER, N.P. 1995. A systematic study of the genus Pseudopentameris ( Arundinoideae : Poaceae ). Bothalia 25
  • CHIPPINDALL, L.K.A. 1955. A guide to the identification of grasses in South Africa. In D. Meredith, The grasses and pastures of South Africa . Central News Agency, Cape Town
  • CLAYTON, W.D. & RENVOIZE S.A. 1986. Genera graminum. Grasses of the world. Kew Bulletin . Additional series 13
  • CONERT, H.J. 1971. The genus Danthonia in Africa. Mitteilungen der Botanischen Staatssammlung München 10
  • 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
  • STAPF, O. 1898-1900. Gramineae . Flora capensis 7
  • WATSON, L. & DALLWITZ, M.J. 1994. The grass genera of the world , revised edn. CAB International, Oxon