e-Key <span id="jodit_selection_marker_1709025703329_11514953394100536" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Diandro<span id="jodit_selection_marker_1709025703330_5076698930033714" 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 - Chloridoideae - Eragrostideae - Eleusininae - Diandrochloa De Winter

Description:

  • Annual or rarely perennial, tufted, often hygrophilous
  • Leaf blade linear to linear-lanceolate, expanded; ligule an unfringed membrane
  • Inflorescence a panicle, contracted, dense or much branched and divaricate, usually rigid, always much longer than broad, branches in pseudowhorls on a strongly developed central axis; spikelets solitary, pedicelled
  • Spikelet 1-3 mm long, laterally compressed, disarticulating above glumes and between florets; glumes unequal to ± equal, shorter than spikelets, ovate to lanceolate, membranous, often subhyaline, keeled, 1-nerved, awnless
  • Florets 2-10, bisexual, sometimes uppermost floret rudimentary; lemma 0.5-1.0 mm long, similar to firmer in texture to glumes, usually translucent or thinly coriaceous, glabrous, strongly keeled, often depressed between keels, 3-nerved, nerves distinct, rounded, emarginate or acute or sometimes somewhat erose, awnless; callus short, truncate, glabrous; palea subequal to lemma, membranous, 2-keeled, nerves strongly developed in lower part of keels, apex truncate or rounded, or 3-lobed
  • Lodicules 2, truncate
  • Stamens 2
  • Ovary glabrous; styles terminal, plumose
  • x = 10

Nomenclature:

  • Diandrochloa De Winter
    • De Winter: 387 (1960)
    • Stapf: 630 (1900) under Eragrostis Wolf
    • De Winter: 182 (1955)
    • Clayton & Renvoize: 215 (1986), included in Eragrostis Wolf
    • Gibbs Russell et al.: 104 (1990)
    • Watson & Dallwitz: 313 (1994)

Distribution & Notes:

  • Global: Species ± 7, Americas, Australia, Asia and Africa
  • Southern Africa: Species 2, widespread but not recorded in Western Cape

References:

  • CLAYTON, W.D. & RENVOIZE S.A. 1986. Genera graminum. Grasses of the world. Kew Bulletin. Additional series 13
  • DE WINTER, B. 1955. Eragrostis. In D. Meredith, The grasses and pastures of South Africa. Central News Agency, Cape Town
  • DE WINTER, B. 1960. A new genus of the Gramineae. Bothalia 7
  • 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