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  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis teretifolia Laegaard

        This species is accepted, and its native range is Central Ecuador.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Butt sheaths persistent and investing base of culm; with compacted dead sheaths. Culms 15-30 cm long; 0.7-1 mm diam. Culm-internodes striate; distally glabrous. Leaves mostly basal. Leaf-sheaths striately veined; glabrous on surface. Ligule an eciliate membrane; 6-10 mm long; acute. Leaf-blades aciculate; involute; 3-5 cm long; 0.5-0.8 mm wide; stiff. Leaf-blade surface glabrous. Leaf-blade apex obtuse.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; interrupted; 5-6 cm long; 1 cm wide. Primary panicle branches appressed; bearing spikelets almost to the base. Panicle axis with scattered hairs. Panicle branches with scattered hairs. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus 0.5 mm long; pilose; disarticulating obliquely. Floret callus hairs 1-2 mm long.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus 0.5 mm long; pilose; disarticulating obliquely. Floret callus hairs 1-2 mm long.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny. Lower glume lanceolate; 1 length of upper glume; membranous; much thinner on margins; purple; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex erose; acute. Upper glume lanceolate; 6 mm long; 1.7 length of adjacent fertile lemma; membranous; with membranous margins; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex erose; acute.
    Florets
    Fertile lemma lanceolate; 3.5 mm long; membranous; shiny; without keel; 3 -veined. Lemma surface smooth; glabrous. Lemma apex erose; awned; 1 -awned. Principal lemma awn dorsal; arising 0.1 way up back of lemma; straight; 4 mm long overall. Palea 2.3 mm long. Rhachilla extension 2 mm long; pilose; with 1-2 mm long hairs.
    Flowers
    Lodicules 2. Anthers 3; 1.2 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Disseminule comprising a floret.
    Distribution
    South America: western South America.
    Reference
    Aveneae. Laegaard 2001.

    Distribution

    Native to:

    Ecuador

    Other Data

    Calamagrostis teretifolia Laegaard appears in other Kew resources:

    Bibliography

    First published in Novon 8: 27 (1998)

    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.
    • 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.

    Literature

    Kew Backbone Distributions

    • 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.

    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