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  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis pusilla Reeder

        This species is accepted, and its native range is New Guinea.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 2-5 cm long; 0.5 mm diam.; 2 -noded. Culm-internodes striate; distally glabrous. Leaf-sheaths longer than adjacent culm internode; striately veined; papillose; glabrous on surface. Ligule an eciliate membrane; 0.5 mm long; entire, or erose; truncate, or obtuse. Leaf-blades straight, or curved; filiform; conduplicate; 1-2.8 cm long; 0.4-0.6 mm wide; stiff. Leaf-blade venation with 4 secondary veins. Leaf-blade surface papillose; glabrous. Leaf-blade apex obtuse; callose.
    Inflorescences
    Inflorescence a panicle; shorter than basal leaves. Panicle open; oblong; 1.5-1.8 cm long; bearing few spikelets. Primary panicle branches ascending; simple. Panicle axis scabrous. Panicle branches stiff; angular; with prominent pulvini. Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; scabrous.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets ovate; laterally compressed; 1.8-2 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.2-0.3 mm long; 0.1-0.2 length of lemma.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets ovate; laterally compressed; 1.8-2 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.2-0.3 mm long; 0.1-0.2 length of lemma.
    Glume
    Glumes persistent; similar; shorter than spikelet; firmer than fertile lemma; shiny. Lower glume lanceolate; 1.2-1.3 mm long; 1 length of upper glume; coriaceous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate; 1.2-1.5 mm long; 0.75 length of adjacent fertile lemma; coriaceous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate.
    Florets
    Fertile lemma lanceolate; 1.8-2 mm long; chartaceous; without keel, or keeled; lightly keeled; 5 -veined. Lemma lateral veins obscure. Lemma apex obtuse; awned; 1 -awned. Principal lemma awn dorsal; arising 0.75 way up back of lemma; straight; 1.3 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels contiguous above a sulcus. Rhachilla extension 1 mm long; pilose.
    Flowers
    Lodicules 2; 0.8 mm long. Anthers 3; 0.6 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform.
    Distribution
    Asia-tropical: Papuasia.
    Reference
    Aveneae. Reeder 1997.

    Distribution

    Native to:

    New Guinea

    Synonyms

    Other Data

    Calamagrostis pusilla Reeder appears in other Kew resources:

    Bibliography

    First published in J. Arnold Arbor. 31: 322 (1950)

    Accepted by

    • 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

    • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.

    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 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