e-Key <span id="jodit_selection_marker_1709035534627_8658713406306111" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Dregeo<span id="jodit_selection_marker_1709035534627_9254483577857224" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>chloa
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Poaceae - Arundinoideae - Arundineae - Dregeochloa Conert

Description:

  • Perennial, tufted, with short branched rhizomes, often forming low cushions
  • Leaf blade linear or ovate-lanceolate to ovate, usually folded, sometimes rigid or succulent; ligule a minute fringe of hairs
  • Inflorescence usually a single raceme, rarely a dense, contracted panicle; spikelets solitary, on hairy pedicels
  • Spikelet 10-15 mm long, ± laterally compressed, lanceolate, disarticulating above glumes; glumes ± equal, as long as to longer than spikelet, similar, lanceolate to broadly lanceolate, membranous, rounded, flat or with more than one keel, 5-7-nerved, minutely hairy, acute, awnless
  • Florets 3-9; bisexual; uppermost floret reduced and sterile; lemma similar in texture to glumes, membranous, 7-9-nerved, hairy, hairs in tufts or not tufted, mixed, tufts usually in a transverse row at base of lobes with 1 or 2 larger marginal tufts below these, 2-lobed, lobes triangular, acute or nerve excurrent into an awn (bristle), central awn geniculate, loosely twisted in lower third, ± as long as body of lemma; callus long, narrowly obtuse, hairy; palea hyaline (thinner than lemma), narrow-elliptic, rounded to emarginate, 2-keeled, 2-nerved, nerves prominent, hairy in upper half
  • Lodicules 2, glabrous
  • Stamens 3
  • Ovary glabrous; styles short, shortly plumose
  • Fruit an achene with free pericarp
  • x = 7

Nomenclature:

  • Dregeochloa Conert
    • Conert: 335 (1966)
    • Stapf: 530 (1899) under Danthonia Stapf
    • Chippindall: 245 (1955) under Danthonia Stapf
    • Launert: 68 (1970)
    • Clayton & Renvoize: 177 (1986)
    • Gibbs Russell et al.: 118 (1990)
    • Watson & Dallwitz: 345 (1994)
  • Danthonia Stapf
    • Stapf: 516 (1899) in part

Distribution & Notes:

  • Southern Africa: Species 2, S Namibia to Northern Cape

References:

  • 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. 1966. Dregeochloa, eine neue Gattung der Gramineen. Senckenbergiana Biologica 47
  • 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
  • LAUNERT, E. 1970. Gramineae. Prodromus einer Flora von Südwestafrika 160
  • 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