1. Family: Poaceae Barnhart
    1. Genus: Arthrostylidium Rupr.
      1. Arthrostylidium pubescens Rupr.

        This species is accepted, and its native range is Costa Rica to Venezuela, Trinidad.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; pachymorph. Culms erect, or geniculately ascending; 1000-1500 cm long; 10-20 mm diam.; woody. Culm-internodes terete; thick-walled; distally hispid. Lateral branches dendroid. Bud complement 1. Branch complement many; in a clump; subtended by a bare patch above the node; with 1 branch dominant; thinner than stem. Culm-sheaths hispid; without auricles. Culm-sheath ligule 2 mm high. Culm-sheath blade lanceolate; 10-23 cm long; hispid; acute. Leaf-sheaths glabrous on surface; outer margin hairy. Leaf-sheath oral hairs woolly; dark. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate; 6-20 cm long; 4-15 mm wide. Leaf-blade surface glabrous. Leaf-blade margins scaberulous.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 3-14 cm long. Rhachis semiterete. Spikelet packing broadside to rhachis; distant. Spikelets appressed; solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 4-8 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 30-40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas.
    Fertile
    Spikelets comprising 1 basal sterile florets; 4-8 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 30-40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume elliptic; 3-4 mm long; 0.7-0.8 length of upper glume; chartaceous; without keels; 3-5 -veined. Lower glume apex acute. Upper glume elliptic; 4-5 mm long; 0.5 length of adjacent fertile lemma; without keels; 3-5 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; with palea; persisting on inflorescence. Lemma of lower sterile floret similar to fertile lemma. Fertile lemma ovate; 8-9 mm long; chartaceous; without keel; 9 -veined. Lemma apex acute. Palea 1 length of lemma. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 3. Anthers 3. Stigmas 2. Ovary umbonate.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: Mesoamericana, Caribbean, and northern South America.
    Reference
    Bambuseae. Pohl.

    Distribution

    Native to:

    Colombia, Costa Rica, Panamá, Trinidad-Tobago, Venezuela

    Arthrostylidium pubescens Rupr. appears in other Kew resources:

    First published in Mém. Acad. Imp. Sci. Saint-Pétersbourg, Sér. 6, Sci. Math., Seconde Pt. Sci. Nat. 5: 118 (1839)

    Accepted by

    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    Literature

    Kew Backbone Distributions
    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    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