1. Family: Poaceae Barnhart
    1. Genus: Festuca Tourn. ex L.
      1. Festuca calligera (Piper) Rydb.

        This species is accepted, and its native range is W. Central U.S.A.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Rhizomes absent. Culms erect; 15-65 cm long. Culm-internodes smooth; distally glabrous. Leaf-sheaths open for most of their length; with 0.25-0.5 of their length closed; glabrous on surface, or hirsute; with reflexed hairs. Ligule an eciliate membrane; (0.2-)0.3-0.5(-1) mm long. Collar glabrous. Leaf-blades conduplicate; 0.4-0.8 mm wide. Leaf-blade venation comprising 5-7 vascular bundles; with (1-)3-5 inner ridges; with sclerenchyma strands above all veins; with 7 subepidermal sclerenchyma strands; with subepidermal sclerenchyma free from veins. Leaf-blade surface scabrous; rough abaxially, or on both sides; glabrous, or pubescent; hairy adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; 5-15 cm long. Primary panicle branches appressed; 1-2(-3) -nate; bearing 2-3 fertile spikelets on each lower branch. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising (2-)4-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; (6-)7-9(-11) mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising (2-)4-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; (6-)7-9(-11) mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2.5-4 mm long; 0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous; rough above. Lower glume apex acute. Upper glume lanceolate, or elliptic; (2.8-)3-5 mm long; 0.75 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume surface scabrous; rough above. Upper glume apex acute.
    Florets
    Fertile lemma elliptic; (3.8-)4-6 mm long; chartaceous; without keel; 5 -veined. Lemma surface smooth, or scabrous; rough above; glabrous. Lemma apex acute; awned; 1 -awned. Principal lemma awn 1-2.5 mm long overall. Palea 2 -veined. Palea surface scabrous. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 2.2-3.5 mm long. Ovary with a few apical hairs.
    Fruits
    Caryopsis with adherent pericarp. Hilum linear.
    Distribution
    North America: northwest USA, southwest USA, and south-central USA.
    Reference
    Poeae. Fl N Amer 2007.

    Images

    Distribution

    Native to:

    Arizona, Colorado, New Mexico, Utah, Wyoming

    Festuca calligera (Piper) Rydb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Hitchcock, A.S. [478], Arizona K000913321

    First published in Bull. Torrey Bot. Club 36: 537 (1909)

    Accepted by

    • Allred, K.W. (2012). Flora Neomexicana, ed. 2, 1: 1-599. Range Science Herbarium, Las Cruces, New Mexico.

    Not accepted by

    • Govaerts, R. (2001). World Checklist of Seed Plants Database in ACCESS E-F: 1-50919. [Cited as Festuca ovina.]

    Literature

    Kew Backbone Distributions
    • Allred, K.W. (2012). Flora Neomexicana, ed. 2, 1: 1-599. Range Science Herbarium, Las Cruces, New Mexico.

    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.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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