1. Family: Poaceae Barnhart
    1. Genus: Microstegium Nees
      1. Microstegium steenisii Jansen

        This species is accepted, and its native range is Jawa.

    [GB]
    Habit
    Annual. Culms geniculately ascending; 50-80 cm long; rooting from lower nodes. Culm-internodes distally glabrous. Culm-nodes pubescent. Lateral branches sparse. Leaf-sheaths 2-7 cm long; mostly shorter than adjacent culm internode; glabrous on surface. Ligule a ciliolate membrane; 0.5-0.7 mm long. Leaf-blades lanceolate; 4-5 cm long; 6-8 mm wide. Leaf-blade surface glabrous, or pubescent.
    Inflorescences
    Inflorescence composed of racemes. Racemes 2-4; digitate; 4-5 cm long. Rhachis fragile at the nodes; ciliate on margins. Rhachis hairs 1-1.5 mm long. Rhachis internodes linear. Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster; subequal. Pedicels linear; ciliate.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 5 mm long; falling entire; deciduous from the base and with accessory branch structures. Spikelet callus pilose; base obtuse; attached transversely. Spikelet callus hairs 1-1.5 mm long.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 5 mm long; falling entire; deciduous from the base and with accessory branch structures. Spikelet callus pilose; base obtuse; attached transversely. Spikelet callus hairs 1-1.5 mm long.
    Glume
    Glumes dissimilar; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; coriaceous; 2-keeled; keeled obtusely; 4 -veined. Lower glume primary vein scabrous. Lower glume surface concave; glabrous. Lower glume margins ciliate. Lower glume apex emarginate. Upper glume elliptic; 1-keeled; 3 -veined. Upper glume margins ciliate. Upper glume apex acute; muticous.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; 5 mm long; hyaline. Fertile lemma lanceolate; 2 mm long; hyaline; without keel; 0 -veined. Lemma apex lobed; 2 -fid; incised 0.25 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; flexuous; 12-15 mm long overall. Palea oblong; 0.33 length of lemma.
    Flowers
    Anthers 3; 1.5 mm long.
    Distribution
    Asia-tropical: Malesia.
    Reference
    Andropogoneae. Fl Java 1997.

    Distribution

    Microstegium steenisii Jansen appears in other Kew resources:

    First published in Reinwardtia 2: 306 (1953)

    Accepted by

    • Chen, C.H., Veldkamp, J.-F. & Kuoh, C.S. (2012). Taxonomic revision of Microstegium s.str. (Andropogoneae, Poaceae) Blumea 57: 160-189.
    • 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
    • Chen, C.H., Veldkamp, J.-F. & Kuoh, C.S. (2012). Taxonomic revision of Microstegium s.str. (Andropogoneae, Poaceae) Blumea 57: 160-189.

    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