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  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis planifolia (Kunth) Trin. ex Steud.

        This species is accepted, and its native range is Costa Rica, W. South America to Venezuela.

    [GB]
    Habit
    Perennial. Culms erect; 72 cm long. Culm-internodes smooth, or scaberulous. Leaf-sheaths antrorsely scabrous; glabrous on surface, or pilose. Ligule a ciliolate membrane; 0.8 mm long; erose; truncate. Leaf-blades flat; 20-40 cm long; 2-2.5 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Panicle open; oblong; 20 cm long; 4 cm wide. Primary panicle branches 9 cm long. Panicle axis scabrous; glabrous, or hispidulous. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.8-4 mm long; scabrous.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 3.8-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.6 mm long; 0.15 length of lemma.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 3.8-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.6 mm long; 0.15 length of lemma.
    Glume
    Glumes persistent; similar; reaching apex of florets; firmer than fertile lemma. Lower glume lanceolate; 3.6-4.6 mm long; 0.9 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume surface smooth, or asperulous. Lower glume apex acute. Upper glume lanceolate; 3.8-5 mm long; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume surface smooth, or asperulous. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 3.4-4.2 mm long; membranous; purple; without keel; 5 -veined. Lemma surface scabrous. Lemma apex dentate; 2 -fid, or 4 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.5-0.6 way up back of lemma; geniculate; 5-6.6 mm long overall; clearly exserted from spikelet; with twisted column. Palea 2.4-3.2 mm long. Rhachilla extension 1-1.8 mm long; villous; with 3 mm long hairs.
    Flowers
    Lodicules 2. Anthers 2; linear; 2 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.
    Distribution
    South America: northern South America and western South America.
    Reference
    Aveneae. Villav 1996.
    [CPLC]

    Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

    Distribution
    Nativa en Colombia; Alt. 3000 - 4000 m.; Andes.
    Habit
    Hierba
    Conservation
    No Evaluada
    [GB]
    Habit
    Perennial; caespitose. Culms geniculately ascending, or decumbent; 30-100 cm long; 1-3 mm diam. Culm-internodes distally glabrous. Culm-nodes pallid, or purple; glabrous. Lateral branches lacking. Leaf-sheaths smooth; glabrous on surface, or pilose; with reflexed hairs. Ligule an eciliate membrane; 1-3 mm long. Leaf-blades flat, or conduplicate; 10-30 cm long; 3-6 mm wide. Leaf-blade surface ribbed; pilose; hairy adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; 10-25 cm long. Primary panicle branches ascending. Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels filiform; scabrous.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose; acute. Floret callus hairs 0.5-1 mm long.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose; acute. Floret callus hairs 0.5-1 mm long.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 1 length of upper glume; membranous; purple; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex attenuate. Upper glume lanceolate; 1.3 length of adjacent fertile lemma; membranous; purple; 1-keeled; 1-3 -veined. Upper glume primary vein scabrous. Upper glume lateral veins obscure. Upper glume apex attenuate.
    Florets
    Fertile lemma lanceolate; 3.8-4.5 mm long; membranous; without keel; 5 -veined. Lemma lateral veins obscure. Lemma apex dentate; 2 -fid; with lobes 1.2-1.7 mm long; awned; 1 -awned. Principal lemma awn dorsal; arising 0.5-0.66 way up back of lemma; geniculate; 4.2-5.7 mm long overall; with twisted column. Palea 2.8-3.5 mm long. Rhachilla extension 1.3-2.1 mm long; villous; with 2-5 mm long hairs.
    Flowers
    Lodicules 2. Anthers 2; 1.2-1.4 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp; fusiform; 2 mm long. Hilum punctiform. Endosperm soft. Disseminule comprising a floret.
    Distribution
    South America: Mesoamericana, northern South America, and western South America.
    Reference
    Aveneae. Fl Costaric 1994.
    [CPLC]

    Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

    Distribution
    Nativa en Colombia; Alt. 3000 - 4000 m.; Andes, Sierra Nevada de Santa Marta.
    Habit
    Hierba
    Conservation
    No Evaluada
    [CPLC]

    Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

    Distribution
    Nativa en Colombia; Alt. 3000 - 3500 m.; Andes.
    Habit
    Hierba
    Conservation
    No Evaluada

    Distribution

    Native to:

    Bolivia, Colombia, Costa Rica, Ecuador, Peru, Venezuela

    Synonyms

    Other Data

    Calamagrostis planifolia (Kunth) Trin. ex Steud. appears in other Kew resources:

    Bibliography

    First published in Nomencl. Bot., ed. 2, 1: 251 (1840)

    Accepted by

    • (2019). https://doi.org/10.3897/phytokeys.122.33032 epublication.
    • 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.
    • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181.
    • Brako, L. & Zarucchi, J.L. (1993). Catalogue of the Flowering Plants and Gymnosperms of Peru Monographs in Systematic Botany from the Missouri Botanical Garden 45: i-xl, 1-1286.

    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.
    • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.
    • Brako, L. & Zarucchi, J.L. (1993). Catalogue of the Flowering Plants and Gymnosperms of Peru Monographs in Systematic Botany from the Missouri Botanical Garden 45: i-xl, 1-1286.

    Sources

    Catálogo de Plantas y Líquenes de Colombia
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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