1. Family: Poaceae Barnhart
    1. Heterachne Benth.

      1. This genus is accepted, and its native range is N. Australia.

    [GB]

    nonem

    Habit
    Annual. Culms erect, or geniculately ascending (1), or decumbent (1); slender (1/1); 10-21-36 cm long. Ligule a fringe of hairs. Leaf-blades filiform (1), or linear (2); stiff (1), or firm (2).
    Inflorescences
    Inflorescence a panicle. Panicle open (1), or spiciform (2). Spikelets solitary. Fertile spikelets sessile (1), or pedicelled. Pedicels oblong.
    Spikelets
    Spikelets comprising 1 fertile florets, or 2 fertile florets (1); with diminished florets at the apex. Spikelets oblong (1), or ovate (2), or orbicular (2); laterally compressed; 2-4-10 mm long; breaking up at maturity; disarticulating below each fertile floret (2), or above glumes but not between florets (1).
    Fertile
    Spikelets comprising 1 fertile florets, or 2 fertile florets (1); with diminished florets at the apex. Spikelets oblong (1), or ovate (2), or orbicular (2); laterally compressed; 2-4-10 mm long; breaking up at maturity; disarticulating below each fertile floret (2), or above glumes but not between florets (1).
    Glume
    Glumes persistent (1), or deciduous (2); shorter than spikelet. Lower glume lanceolate (1), or ovate; 0.6-0.7683-1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse (1), or acute. Upper glume lanceolate (1), or ovate; 0.6-0.7333-0.9 length of adjacent fertile lemma; 1-keeled; 1 -veined (1), or 3 -veined (2). Upper glume apex obtuse (1), or acute.
    Florets
    Fertile lemma oblong (1), or ovate (2); membranous (2), or cartilaginous (1); keeled; winged on keel; 3 -veined. Lemma midvein without distinctive roughness (2), or scaberulous (1); eciliate (2), or ciliolate (1). Lemma margins eciliate (2), or ciliolate (1). Lemma apex obtuse. Palea 0.66-0.72-0.75 length of lemma. Palea keels winged; eciliate (1), or ciliolate (2). Apical sterile florets 1 in number (1), or 2-3 in number (2), or 4-22 in number (1); barren; separate (1), or in a clump (2); oblong.
    Flowers
    Lodicules 2; fleshy. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid (2/2).
    Distribution
    Australasia.

    Images

    Distribution

    Native to:

    Northern Territory, Queensland, Western Australia

    Heterachne Benth. appears in other Kew resources:

    First published in Hooker's Icon. Pl. 13: 39 (1877)

    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.

    Sources

    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 2018. 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 2018. 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