1. Family: Poaceae Barnhart
    1. Genus: Festuca Tourn. ex L.
      1. Festuca flacca Hack. ex E.B.Alekseev

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

    [GB]
    Habit
    Perennial; culms solitary, or caespitose; clumped loosely. Cataphylls inconspicuous. Rhizomes short; fleshy; not obviously scaly. Basal innovations extravaginal, or intravaginal. Culms erect; of moderate stature; straight, or curved; 110-150 cm long; 2-4 mm diam.; 3-8 -noded; with 0.5-0.66 of their length below uppermost node; without nodal roots. Culm-internodes terete; smooth. Culm-nodes without exudate; glabrous. Lateral branches lacking. Leaves basal and cauline; 3-5 per branch. Leaf-sheaths tight; unthickened at base; open for most of their length; without keel; striately veined; smooth. Leaf-sheath auricles absent. Ligule an eciliate membrane; 2-4.5 mm long; membranous; translucent, or white; lacerate; acute. Leaf-blade base symmetrical. Leaf-blades flexuous; linear in section; 25-40 cm long; 4-9 mm wide; flaccid; dark green. Leaf-blade midrib evident. Leaf-blade venation distinct; with subepidermal sclerenchyma strands similar in size; with subepidermal sclerenchyma attached to veins above and below; without layer of subepidermal sclerenchyma masking vein striation. Leaf-blade surface scabrous; rough on both sides; glabrous. Leaf-blade margins scaberulous; glabrous. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence a panicle; with 1 peduncles per sheath. Peduncle terete; eglandular; glabrous. Panicle open; lanceolate; continuous; loose; secund; straight; 20-30 cm long. Primary panicle branches appressed, or ascending; moderately divided; 10-15 cm long; bearing spikelets almost to the base. Panicle branches straight; smooth. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 2-4 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 7-9 mm long; breaking up at maturity; disarticulating below each fertile floret. Spikelet callus glabrous. Rhachilla internodes scaberulous. Floret callus glabrous.
    Fertile
    Spikelets comprising 2-4 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 7-9 mm long; breaking up at maturity; disarticulating below each fertile floret. Spikelet callus glabrous. Rhachilla internodes scaberulous. Floret callus glabrous.
    Glume
    Glumes persistent; similar; subequal in width; shorter than spikelet. Lower glume lanceolate; 1.2-2.4 mm long; 0.5-0.75 length of upper glume; coriaceous; mid-green; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute, or acuminate. Upper glume linear; 2.3-3.5 mm long; 0.5-0.6 length of adjacent fertile lemma; coriaceous; dark green, or purple; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; symmetrical; 4.5-5.5 mm long; chartaceous; pallid, or mid-green; without keel; 5 -veined. Lemma apex awned; 1 -awned. Principal lemma awn filiform; 6-12 mm long overall. Palea 2 -veined. Palea keels scabrous; adorned all along; with hairs 4 mm long. Palea apex dentate; 2 -fid. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 0.9-1.2 mm long. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp; sulcate on hilar side. Hilum linear; 0.66 length of caryopsis.
    Distribution
    South America: western South America.
    Reference
    Poeae. Stancik 2005.

    Distribution

    Native to:

    Ecuador

    Festuca flacca Hack. ex E.B.Alekseev appears in other Kew resources:

    First published in Bot. Zhurn. (Moscow & Leningrad) 69: 1543 (1984)

    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 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