e-Key <span id="jodit_selection_marker_1709287281162_02103075446047087" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Elym<span id="jodit_selection_marker_1709287281163_5062903952911331" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>andra
SANBI Flora Keys Logo
Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Poaceae - Panicoideae - Andropogoneae - Anthistiriinae - Elymandra Stapf

Description:

  • Perennial or annual, tufted
  • Leaf blade linear, expanded, long, tapering to a fine apex; ligule an unfringed membrane, truncate
  • Inflorescence of paired or rarely solitary racemes long exserted from narrow spatheoles and gathered into a false panicle; raceme bases filiform, unequal, rarely deflexed; internodes and pedicels linear; racemes with 1-10 homogamous spikelet pairs; spikelets in pairs or triplets, usually in long-short combination but lower spikelet homogamous and sessile
  • Sessile spikelet linear-oblong, ± terete, falling with glumes; glumes ± equal, coriaceous, awned, dissimilar; lower glume rounded on back and sides, not grooved, obtuse or truncate, at length dark brown; upper glume 3-nerved, back rounded and grooved, obliquely awned
  • Florets 2; lower floret sterile, reduced to a hyaline lemma; upper floret bisexual; lemma hyaline, often with deeply bilobed apex; awned from sinus; awn stout, geniculate, column hairy; callus pungent; palea 0
  • Lodicules 2, glabrous, small
  • Stamens 3
  • Ovary glabrous; styles plumose, laterally exserted
  • Caryopsis narrowly ellipsoid
  • Pedicelled spikelet male or sterile, narrowly lanceolate, ± as long as sessile spikelet, white-villous; callus well developed
  • x = 10

Nomenclature:

  • Elymandra Stapf
    • Stapf: 407 (1919)
    • Clayton: 287 (1966)
    • Clayton & Renvoize: 823 (1982)
    • Clayton & Renvoize: 357 (1986)
    • Gibbs Russell et al.: 131 (1990)
    • Watson & Dallwitz: 367 (1994)

Distribution & Notes:

  • Global: Species ± 6, tropical Africa
  • Southern Africa: Species 1: Elymandra grallata (Stapf) Clayton, Namibia (Caprivi area) and N Botswana

References:

  • CLAYTON, W.D. 1966. Studies in the Gramineae. XI. Andropogoneae. The genus Elymandra Stapf. Kew Bulletin 20
  • CLAYTON, W.D. & RENVOIZE, S.A. 1982. Flora of tropical East Africa. Gramineae (Part 3)
  • 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
  • STAPF, O. 1917-1920. Gramineae. Flora of tropical Africa 9
  • WATSON, L. & DALLWITZ, M.J. 1994. The grass genera of the world, revised edn. CAB International, Oxon