1. Family: Poaceae Barnhart
    1. Genus: Festuca Tourn. ex L.
      1. Festuca yalaensis Joch.Müll. & Catalán

        This species is accepted, and its native range is Argentina (Jujuy).

    [GB]
    Habit
    Perennial. Rhizomes elongated. Stolons present. Basal innovations extravaginal. Culms 50-120 cm long; 0.7-1.5 mm diam.; (3-)4-5 -noded. Culm-internodes smooth. Leaf-sheaths open for most of their length; antrorsely scabrous. Ligule a ciliolate membrane; 0.2-0.6 mm long. Leaf-blades erect; filiform, or linear; conduplicate, or involute; 15-40 cm long; 0.8-2 mm wide; 6-18 cm long at summit of culm. Leaf-blade venation comprising 5 vascular bundles; with 4 inner ridges; with sclerenchyma strands below veins and above all veins. Leaf-blade surface scabrous; rough abaxially; puberulous; hairy abaxially.
    Inflorescences
    Inflorescence a panicle; comprising 30-80 fertile spikelets. Peduncle smooth, or antrorsely scabrous above. Panicle open; lanceolate; 8-17 cm long; 1-2.5 cm wide. Primary panicle branches 4-7 in number; 2-3 -nate; 4 cm long; with lower 0.5 length of panicle. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising (2-)3-5(-7) fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; (5-)6-9.5(-11.5) mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes scaberulous. Floret callus pubescent; obtuse.
    Fertile
    Spikelets comprising (2-)3-5(-7) fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; (5-)6-9.5(-11.5) mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes scaberulous. Floret callus pubescent; obtuse.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; (1.8-)2.8-3.8 mm long; 0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; (3-)3.8-4.8 mm long; 0.75-0.8 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 4.5-6.3 mm long; chartaceous; without keel; 5 -veined. Lemma surface scaberulous; rough on veins. Lemma apex acuminate; muticous, or mucronate. Palea 1 length of lemma. Palea keels puberulous; adorned above; with 0.5 of their length adorned. Palea surface puberulous; hairy on back and on margins; hairy above. Palea apex dentate; 2 -fid. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 2.2-3 mm long. Ovary with a few apical hairs.
    Distribution
    Pacific: north-central.
    Reference
    Poeae. Mull. & Catalan.

    Distribution

    Native to:

    Argentina Northwest

    Festuca yalaensis Joch.Müll. & Catalán appears in other Kew resources:

    First published in Darwiniana 48: 88 (2010)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

    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