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GrassBase - The Online World Grass Flora
Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Festuca pubiglumis
HABIT Perennial; caespitose. Rhizomes short. Butt sheaths persistent and investing base of culm; with compacted dead sheaths. Culms erect; 40–50 cm long; 2 mm diam.; 2 -noded. Culm-internodes striate; distally glabrous. Leaf-sheaths loose; mostly shorter than adjacent culm internode; glabrous on surface. Ligule a ciliolate membrane; 0.5 mm long. Leaf-blades conduplicate; 14–25 cm long; 3–4 mm wide. Leaf-blade venation comprising 15 vascular bundles; with sclerenchyma strands below veins and above all veins; with subepidermal sclerenchyma attached to veins below. Leaf-blade surface glabrous.
INFLORESCENCE Inflorescence a panicle; embraced at base by subtending leaf.
Panicle open; ovate; 16–20 cm long. Primary panicle branches 2–8 cm long.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 7–8 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 10–13 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes persistent; dissimilar; shorter than spikelet; similar to fertile lemma in texture. Lower glume linear; 5–6 mm long; 0.8–0.9 length of upper glume; chartaceous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface pilose. Lower glume margins ciliate. Lower glume apex acuminate. Upper glume lanceolate; 6–7 mm long; 0.8–0.9 length of adjacent fertile lemma; chartaceous; without keels; 3 -veined. Upper glume surface pilose. Upper glume margins ciliate. Upper glume apex acuminate.
FLORETS Fertile lemma lanceolate; 7.5–8 mm long; chartaceous; without keel; 5 -veined. Lemma surface pubescent. Lemma apex acute; awned; 1 -awned. Principal lemma awn 5–7 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Anthers 3; 4 mm long. Ovary glabrous.
FRUIT Caryopsis with adherent pericarp; 3 mm long. Hilum linear.
DISTRIBUTION Asia-temperate: China.
NOTES Poeae. Lu 2000.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
