e-Key <span id="jodit_selection_marker_1709290488721_7924116212271399" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Erio<span id="jodit_selection_marker_1709290488721_3649212851743595" 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 - Panicoideae - Paniceae - Setariinae - Eriochloa Kunth

Description:

  • Perennial or annual
  • Leaf blade linear, expanded, tapering to a fine point; ligule a reduced fringed membrane or fringe of hairs
  • Inflorescence of few to many spike-like racemes arranged on a central axis, or paniculate; spikelets either solitary, in pairs, or in short clusters, supported on a bead-like swelling
  • Spikelet lanceolate to elliptic, dorsiventrally compressed, acute to aristate, falling with glumes; glumes usually unequal, dissimilar; lower glume reduced or apparently absent; upper glume as long as spikelet, ovate-elliptic, 5-nerved, glabrous or hairy, mucronate or usually shortly awned
  • Florets 2; lower floret sterile or male; lemma similar in shape and texture to upper glume; palea similar to lemma or reduced, or 0; upper floret bisexual; lemma firmer than glumes, elliptic with inflexed margins, finely rugose, 5-nerved, glabrous, abruptly mucronate, awned or awnless; awn straight, shorter than body of lemma; palea elliptic, obtuse with inflexed margins
  • Lodicules 2, broadly cuneate, sometimes somewhat suppressed
  • Stamens 3
  • Ovary glabrous; styles distinct or united at base, plumose
  • Caryopsis oblong-ellipsoid, dorsiventrally compressed, obtuse
  • x = 9 (high polyploidy)

Nomenclature:

  • Eriochloa Kunth
    • Kunth: 94 (1816)
    • Stent: 258 (1924)
    • Chippindall: 369 (1955)
    • Clayton & Renvoize: 568 (1982)
    • Clayton & Renvoize: 285 (1986)
    • Clayton: 84 (1989)
    • Gibbs Russell et al.: 164 (1990)
    • Watson & Dallwitz: 393 (1994)

Distribution & Notes:

  • Global: Species 30, tropics
  • Southern Africa: Species 5, Namibia, Botswana, North-West, Mpumalanga, Swaziland and KwaZulu-Natal

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. 1989. Gramineae. Flora zambesiaca 10, 3
  • 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
  • KUNTH, C.S. 1816. In F.W.H.A. von Humboldt, A.J.A. Bonpland & C.S. Kunth, Nova genera et species plantarum 1. Libraria Graeco-Latino-Germanica, Paris
  • STENT, S.M. 1924. South African Gramineae. Grasses of the Transvaal as represented in the National Herbarium. Bothalia 1
  • WATSON, L. & DALLWITZ, M.J. 1994. The grass genera of the world, revised edn. CAB International, Oxon