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 komarovii

HABIT Perennial; caespitose; clumped densely. Butt sheaths pubescent; persistent and investing base of culm; with fibrous dead sheaths. Basal innovations intravaginal. Culms erect; 30–40 cm long. Leaf-sheaths open for most of their length; glabrous on surface. Ligule a ciliolate membrane; 0.1–0.5 mm long. Leaf-blades 3–4 mm wide; pruinose. Leaf-blade surface glabrous. Leaf-blade margins scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Dioecious. Inflorescence a panicle.

Panicle open; ovate; 5–10 cm long. Primary panicle branches bearing 1–3 fertile spikelets on each lower branch. Panicle branches smooth.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 5–7 fertile florets; with diminished florets at the apex. Spikelets obovate; laterally compressed; 10–12 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 4–5 mm long; 0.75 length of upper glume; membranous; pallid; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 5–6 mm long; 0.66 length of adjacent fertile lemma; membranous; pallid; without keels; 1–3 -veined. Upper glume lateral veins absent, or obscure. Upper glume apex obtuse.

FLORETS Fertile florets female. Fertile lemma oblong; 8–9 mm long; chartaceous; much thinner on margins; keeled; 5 -veined. Lemma lateral veins with distinct primaries but obscure intermediates. Lemma surface smooth, or papillose. Lemma apex obtuse, or acute; muticous. Palea 2 -veined. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 4–4.5 mm long. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp; oblong, or ovoid; 3–3.5 mm long; hairy at apex. Hilum linear; 0.5 length of caryopsis.

MALE Male inflorescence similar to female. Male spikelets resembling female.

DISTRIBUTION Asia-temperate: Siberia and Mongolia.

NOTES Poeae. Krivot 1995.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.