e-Key <span id="jodit_selection_marker_1707213811881_23202176257344842" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Brachy<span id="jodit_selection_marker_1707213811881_8253278023336059" 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 - Brachychloa S.M.Phillips

Description:

  • Perennial or annual, tufted or decumbent, stoloniferous
  • Leaf blade linear to almost lanceolate, rigid; ligule a short, truncate, fringed membrane
  • Inflorescence of racemes on a central axis, these long and deciduous or short, persistent and crowded into a loose head or spreading; spikelets solitary, pedicelled
  • Spikelet laterally compressed, lanceolate-oblong to ovate-oblong, disarticulating above glumes and between florets; glumes ± equal, shorter than spikelet, lateral to rachis, lanceolate, keeled, glabrous to minutely scaberulous; lower glume subcoriaceous, acute, awnless, sometimes mucronate, 1-3-nerved; upper glume coriaceous with margins membranous, 3-7-nerved, acuminate to shortly mucronate from between lobes
  • Florets 3-7, bisexual or uppermost floret reduced and sterile; lemma similar in texture to glumes, chartaceous, subobtuse to obtuse, lightly keeled with a single median keel, glabrous or hairy on margins, 3-7-nerved, nerves faint in upper half, 2-lobed, shortly mucronate; callus 0; palea shorter than lemma, slightly gibbous at base, lanceolate to ovate-lanceolate, 2-keeled
  • Lodicules 2, hyaline, minute
  • Stamens 3
  • Ovary glabrous; styles distinct, plumose
  • Caryopsis ellipsoid or trigonous, with free pericarp

Nomenclature:

  • Brachychloa S.M.Phillips
    • Phillips: 158 (1982)
    • Clayton & Renvoize: 214 (1986)
    • Gibbs Russell et al.: 69 (1990)
    • Watson & Dallwitz: 182 (1994)
  • Heterocarpha Stapf & C.E.Hubb.
    • Stapf & Hubbard: 263 (1929) in part
    • Schweickerdt: 193 (1961)

Distribution & Notes:

  • Global: Species 2, both in Mozambique and southern Africa
  • Southern Africa: KwaZulu-Natal

References:

  • 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
  • PHILLIPS, S.M. 1982. Numerical analysis of Eragrostideae. Kew Bulletin 37
  • SCHWEICKERDT, H.G. 1961. Graminearum species nova et genus novum. Der Züchter 31
  • STAPF, O. & HUBBARD, C.E. 1929. Heterocarpha. Bulletin of miscellaneous information 1929
  • WATSON, L. & DALLWITZ, M.J. 1994. The grass genera of the world, revised edn. CAB International, Oxon