1. Family: Poaceae Barnhart
    1. Genus: Thamnocalamus Munro
      1. Thamnocalamus unispiculatus T.P.Yi & J.Y.Shi

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

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 300-500 cm long; 10-15(-20) mm diam.; woody. Culm-internodes terete; solid; (6-)20-25(-30) cm long; mid-green; distally mealy. Culm-nodes swollen. Lateral branches dendroid. Bud complement 1. Branch complement one to several; in a horizontal line. Culm-sheaths deciduous; 0.5 length of internode; coriaceous; pilose; with yellow hairs; hairy on margins; without auricles; ciliate on shoulders; shoulders with straight hairs; shoulders with 4 mm long hairs. Culm-sheath ligule 1 mm high; ciliate. Culm-sheath blade triangular; erect, or reflexed; 0.8-3.3 cm long; 2-4 mm wide; glabrous on surface. Leaves 3-6 per branch. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs scanty; deciduous. Leaf-sheath auricles absent. Ligule a ciliolate membrane; 0.5 mm long; scarious; purple; truncate. Leaf-blade base cuneate; with a brief petiole-like connection to sheath; petiole 0.1-0.15 cm long. Leaf-blades linear, or lanceolate; 2.5-7.2 cm long; 3.5-7 mm wide. Leaf-blade venation with 2-4 secondary veins; with distinct cross veins. Leaf-blade surface glabrous. Leaf-blade margins scabrous.
    Inflorescences
    Synflorescence bractiferous; fasciculate; with spathaceous subtending bracts; bracts 20-27 mm long; without axillary buds at base of spikelet; with ultimate bract subtending a compact bracteolate fascicle of spikelets. Fertile spikelets pedicelled. Pedicels 1 mm long; glabrous.
    Spikelets
    Spikelets comprising 5-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 25-32 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 2-3 mm long.
    Fertile
    Spikelets comprising 5-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 25-32 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 2-3 mm long.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 8-10 mm long; 0.9 length of upper glume; chartaceous; without keels; 5 -veined. Lower glume apex acuminate. Upper glume lanceolate; 8.5-11 mm long; 0.7-0.8 length of adjacent fertile lemma; chartaceous; without keels; 7 -veined. Upper glume apex acuminate.
    Florets
    Fertile lemma lanceolate; 10-15 mm long; chartaceous; without keel; (5-)7-9 -veined. Lemma apex attenuate. Palea 5-10 mm long; 8 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 3; lanceolate; 1.5 mm long; ciliate. Stigmas 3; plumose.
    Fruits
    Caryopsis with adherent pericarp; linear, or oblong; sulcate on hilar side; 6-7 mm long.
    Distribution
    Asia-temperate: China.
    Reference
    Bambuseae. Yi & Shi 2011.

    Distribution

    Thamnocalamus unispiculatus T.P.Yi & J.Y.Shi appears in other Kew resources:

    First published in Acta Phytotax. Sin. 45: 686 (2007)

    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 2019. 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 2019. 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