1. Family: Poaceae Barnhart
    1. Genus: Festuca Tourn. ex L.
      1. Festuca imperatrix Catonica

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

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Basal innovations intravaginal. Culms 10-35 cm long. Leaf-sheaths open for most of their length; with 0.25-0.33 of their length closed; pilose. Leaf-sheath auricles erect. Ligule a ciliolate membrane; 0.1-0.4 mm long. Leaf-blades filiform; conduplicate; 4.5-10 cm long; 0.5-1 mm wide; glaucous; pruinose. Leaf-blade venation with 5-7 secondary veins; with sclerenchyma strands widened to form a discontinuous subepidermal layer, or with continuous uniform subepidermal sclerenchyma layer on the underside. Leaf-blade surface smooth, or scaberulous; rough adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle open; 2.8-5.1 cm long. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising (2-)3 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5.5-8.6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising (2-)3 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5.5-8.6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2.5-3.2 mm long; 0.75 length of upper glume; chartaceous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous; rough above. Lower glume apex acute. Upper glume lanceolate; 2.3-3.9 mm long; 0.5-0.66 length of adjacent fertile lemma; chartaceous; without keels; 3 -veined. Upper glume surface asperulous; rough above. Upper glume apex acuminate; mucronate.
    Florets
    Fertile lemma ovate; 4.5-5.7 mm long; chartaceous; without keel; 5 -veined. Lemma surface glabrous, or puberulous. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 1.9-3.1 mm long overall; 0.5-0.75 length of lemma. Palea 2 -veined. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 2-2.2 mm long. Ovary glabrous.
    Fruits
    Caryopsis with adherent pericarp. Hilum linear.
    Distribution
    Europe: southeastern.
    Reference
    Poeae. Catonica 2005.

    Distribution

    Festuca imperatrix Catonica appears in other Kew resources:

    First published in Pl. Biosystems 135: 275 (2001)

    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.

    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