Skip to main content
  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis erectifolia Hitchc.

        This species is accepted, and its native range is Central & SW. Mexico.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Culms 100-150 cm long. Culm-internodes antrorsely scabrous. Leaf-sheaths smooth, or scaberulous. Ligule an eciliate membrane; 2-3 mm long. Leaf-blades erect; involute; 50-75 cm long; 1 mm wide; stiff. Leaf-blade surface scabrous.
    Inflorescences
    Inflorescence a panicle. Panicle open; pyramidal; 15-29 cm long. Primary panicle branches spreading, or drooping; whorled at most nodes; 5-10 cm long. Panicle axis with lower internodes 3-5 cm long; scabrous. Panicle branches capillary; flexuous; scabrous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 1 mm long; 0.25 length of lemma.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 1 mm long; 0.25 length of lemma.
    Glume
    Glumes persistent; similar; reaching apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 4-5 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 4-5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 4 mm long; membranous; without keel; 5 -veined. Lemma surface smooth, or asperulous. Lemma apex muticous. Rhachilla extension 2-3 mm long; pilose.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: Mexico.
    Reference
    Aveneae. Hitchcock 2004.

    Distribution

    Native to:

    Mexico Central, Mexico Southwest

    Other Data

    Calamagrostis erectifolia Hitchc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Hinton, G.B. [4622], México State K000465746
    Hinton, G.B. [4622], México State K000465747

    Bibliography

    First published in N.L.Britton & al. (eds.), N. Amer. Fl. 17: 507 (1937)

    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.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.

    Literature

    Kew Backbone Distributions

    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

    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