1. Family: Poaceae Barnhart
    1. Euclasta Franch.

      1. This genus is accepted, and its native range is Tropical Africa to Myanmar, Mexico to S. Tropical America.

    [FTEA]

    Gramineae, W. D. Clayton, S. M. Phillips And S. A. Renvoize. Flora of Tropical East Africa. 1974

    Habit
    Annuals; leaf-blades flat; ligule membranous
    Inflorescences
    Inflorescence of 1-several subdigitate racemes, these with 1–3 homogamous pairs at the base; internodes and pedicels linear, with a hyaline median line
    Spikelets
    Sessile spikelet dorsally compressed; callus very short, rounded; lower glume ± flat on the back, abruptly rounded on the flanks, without pits; lower floret reduced to a hyaline lemma; upper lemma entire, with a glabrous or pubescent awn Pedicelled spikelet large, herbaceous.
    Sessile
    Sessile spikelet dorsally compressed; callus very short, rounded; lower glume ± flat on the back, abruptly rounded on the flanks, without pits; lower floret reduced to a hyaline lemma; upper lemma entire, with a glabrous or pubescent awn
    Fruits
    Caryopsis oblong, dorsally compressed
    Pedicelled
    Pedicelled spikelet large, herbaceous.
    [FZ]

    Gramineae, T. A. Cope. Flora Zambesiaca 10:4. 2002

    Habit
    Inflorescences terminal and axillary, of delicate solitary or subdigitate pedunculate racemes; racemes with 1–3 large homogamous pairs at the base; rhachis internodes and pedicels with a translucent longitudinal groove.
    Spikelets
    Sessile spikelet: inferior glume chartaceous, ± flat; inferior floret empty with a hyaline lemma; superior floret bisexual, the lemma entire, stipitiform. Pedicelled spikelet larger than the sessile, male or neuter.
    [GB]

    nonem

    Habit
    Annual. Culms prostrate; 10-67.5-200 cm long; rooting from lower nodes. Ligule a ciliate membrane.
    Inflorescences
    Inflorescence composed of racemes. Racemes single (1), or digitate (1); ascending (1), or drooping (1). Rhachis fragile at the nodes; flattened. Rhachis internodes linear. Rhachis internode tip transverse. Raceme-bases brief (1), or filiform (1); unequal (the longer measured) (1/1). Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear; with a translucent median line (also present in internodes).
    Spikelets
    Basal sterile spikelets well-developed. Companion sterile spikelets well-developed; separately deciduous. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 3-3.625-4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; attached transversely.
    Sterile
    Basal sterile spikelets well-developed. Companion sterile spikelets well-developed; separately deciduous.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 3-3.625-4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; attached transversely.
    Glume
    Glumes exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; chartaceous (1), or coriaceous (1); without keels; wingless (1), or winged on margins (1); 5 -veined. Lower glume lateral veins without ribs (1), or ribbed (1). Lower glume surface flat; pilose. Lower glume apex obtuse. Upper glume lanceolate; chartaceous (1), or coriaceous (1); 1-keeled; 3 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; hyaline; 0 -veined. Fertile lemma linear; hyaline; without keel; 1 -veined. Lemma apex awned; 1 -awned. Principal lemma awn geniculate. Palea absent or minute.
    Flowers
    Anthers 3.
    Distribution
    Africa (1), or Temperate Asia (1), or Tropical Asia, or North America (1), or South America (1).

    Images

    Distribution

    Native to:

    Angola, Benin, Brazil West-Central, Burkina, Burundi, Cameroon, Central African Repu, Chad, Colombia, Comoros, Congo, Costa Rica, Ethiopia, Gabon, Ghana, Guatemala, Guinea, Guinea-Bissau, Honduras, India, Ivory Coast, Madagascar, Malawi, Mali, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Mozambique, Myanmar, Nicaragua, Niger, Nigeria, Oman, Panamá, Peru, Senegal, Sierra Leone, Sudan, Tanzania, Togo, Venezuela, Zambia, Zaïre, Zimbabwe

    Introduced into:

    Cuba, Dominican Republic, Haiti, Jamaica

    Euclasta Franch. appears in other Kew resources:

    First published in Bull. Soc. Hist. Nat. Autun 8: 335 (1895)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora of West Tropical Africa
    • F.T.A. 9: 180 (1917).
    • in Bull. Soc. Hist. Nat. Autun 8: 335 (1895)
    Flora Zambesiaca
    • in Bull. Soc. Hist. Nat. Autun 8: 335 (1895).
    Flora of Tropical East Africa
    • F.T.A. 9: 180 (1917)
    • in Bull. Soc. Hist. Nat. Autun 8: 335 (1895)

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0