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

Poaceae - Arundinoideae - Aristideae - Sartidia De Winter

Description :

  • Perennial, densely tufted, rhizomatous
  • Leaf blade often rolled, reddish brown when dry; ligule a dense fringe of hairs
  • Inflorescence a panicle, erect, narrow, usually interrupted, branches solitary or paired; spikelets solitary, pedicelled
  • Spikelet not noticeably compressed, disarticulating above glumes; glumes ± equal, narrow, acute to acuminate, flat to rounded on back, with or without apical awns, glabrous; lower glume usually 3-nerved; upper glume 3-5-nerved, nerves evanescent
  • Floret l, bisexual; lemma firmer than glumes, coriaceous, subcylindrical, somewhat dorsiventrally compressed, slightly tapering upwards, grooved ventrally with involute margins, glabrous and smooth or scabrid, 3-nerved, without an articulation, 3-awned; awns glabrous or scabrid, spreading, collectively laxly spirally contorted at base when mature, column, when present, somewhat twisted; callus well developed, acute, obtuse or shallowly bifid, densely but shortly hairy; palea small, scale-like, not indurated, usually coriaceous below, 2-keeled, 2-nerved, apex obtuse
  • Lodicules 2, membranous, ± as long as palea, many-nerved
  • Stamens 3
  • Ovary glabrous; styles distinct, plumose
  • Caryopsis dorsiventrally compressed, with deep ventral groove
  • x = 11

Nomenclature:

  • Sartidia De Winter
    • De Winter: 137 (1963)
    • De Winter: 381 (1965)
    • Melderis: 95 (1971)
    • Clayton & Renvoize: 185 (1986)
    • Gibbs Russell et al.: 286 (1990)
    • Watson & Dallwitz: 836 (1994)

Distribution & Notes:

  • Global : Species 4, Africa and Madagascar
  • Southern Africa : Species 3, N Namibia, Northern Province and Mpumalanga

References:

  • CLAYTON, W.D. & RENVOIZE S.A. 1986. Genera graminum. Grasses of the world. Kew Bulletin . Additional series 13
  • DE WINTER, B. 1963. Notes on the genus Aristida L. ( Gramineae ). Kirkia 3
  • DE WINTER, B 1965. The South African Stipeae and Aristideae ( Gramineae ). (An anatomical, cytological and taxonomic study). Bothalia 8
  • 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
  • MELDERIS, A. 1971. Flora zambesiaca 10, 1
  • WATSON, L. & DALLWITZ, M.J. 1994. The grass genera of the world , revised edn. CAB International, Oxon