1. Family: Poaceae Barnhart
    1. Genus: Whiteochloa C.E.Hubb.
      1. Whiteochloa semitonsa (F.Muell. ex Benth.) C.E.Hubb.

        This species is accepted, and its native range is N. Northern Territory to N. Queensland.

    [GB]
    Habit
    Annual; caespitose. Culms 30-60 cm long; 3-6 -noded. Culm-internodes smooth, or scaberulous. Culm-nodes glabrous, or pubescent. Leaf-sheaths glabrous on surface, or hispid, or hirsute; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs; 0.5 mm long. Leaf-blades flat, or conduplicate; 6-11(-23) cm long; 3-4(-4.5) mm wide. Leaf-blade surface scabrous; rough adaxially, or on both sides; glabrous, or hirsute. Leaf-blade margins cartilaginous; scabrous.
    Inflorescences
    Inflorescence composed of racemes. Racemes 7-12; borne along a central axis; unilateral; (2-)3-5(-8.5) cm long; secondarily branched; secondary branches racemulose. Central inflorescence axis 8-14 cm long. Rhachis angular. Spikelets in pairs. Fertile spikelets pedicelled; 2 in the cluster. Pedicels unequal; 0.5-2(-3.5) mm long.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; compressed slightly; acute; 2.5-3(-3.75) mm long; falling entire. Rhachilla internodes elongated below proximal fertile floret (0.1mm). Rhachilla elongation slender.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; compressed slightly; acute; 2.5-3(-3.75) mm long; falling entire. Rhachilla internodes elongated below proximal fertile floret (0.1mm). Rhachilla elongation slender.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume oblate; 1-1.5 mm long; 0.33 length of spikelet; membranous; without keels; 3-5 -veined. Lower glume primary vein tuberculate; ciliate. Lower glume surface smooth, or tuberculate; glabrous, or hispid; hairy on veins; with tubercle-based hairs. Lower glume margins eciliate, or ciliate. Lower glume apex acute; muticous, or mucronate. Upper glume oblong; 1 length of spikelet; membranous; without keels; 5-7 -veined. Upper glume lateral veins ribbed. Upper glume surface smooth, or tuberculate; rough on veins; glabrous, or hispid; hairy on veins; with tubercle-based hairs. Upper glume margins ciliolate. Upper glume apex acuminate.
    Florets
    Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; scarious; 5 -veined; sulcate; glabrous, or hispid; acuminate. Palea of lower sterile floret 1 length of lemma; winged on keels. Fertile lemma elliptic; dorsally compressed; 1.75-2.5 mm long; indurate; without keel. Lemma surface rugulose. Lemma margins involute. Lemma apex apiculate. Palea indurate.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; 1.5-1.75 mm long; dark brown.
    Distribution
    Australasia: Australia.
    Reference
    Paniceae. Lazarides.

    Images

    Distribution

    Native to:

    Northern Territory, Queensland

    Whiteochloa semitonsa (F.Muell. ex Benth.) C.E.Hubb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Elsey, J.R. [s.n.], Australia K000215148 lectotype

    First published in Proc. Roy. Soc. Queensland 62: 111 (1952)

    Accepted by

    • Commonwealth Scientific and Industrial Research Organisation (2014- continuously updated). Atlas of Living Australia http://www.ala.org.au/.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Commonwealth Scientific and Industrial Research Organisation (2014- continuously updated). Atlas of Living Australia http://www.ala.org.au/.

    Sources

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

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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