Festuca extremiorientalis

HABIT Perennial; mat forming; clumped loosely. Culms 40–130 cm long. Leaf-sheaths scaberulous. Ligule an eciliate membrane; 1–2 mm long. Leaf-blades flat; 4–12 mm wide. Leaf-blade surface scabrous; rough on both sides; glabrous, or pilose; sparsely hairy.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong; nodding; 20–30 cm long. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 4–5 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 5–7 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; 3 mm long; 0.5–0.66 length of upper glume; chartaceous; much thinner on margins; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous; rough above. Lower glume apex acuminate. Upper glume lanceolate; 4.5–5 mm long; 0.8–1.1 length of adjacent fertile lemma; chartaceous; with membranous margins; without keels; 3 -veined. Upper glume surface scabrous; rough above. Upper glume apex acuminate.

FLORETS Fertile lemma ovate; 4–6 mm long; chartaceous; without keel; 5 -veined. Lemma midvein scabrous. Lemma margins scabrous. Lemma apex acute; awned; 1 -awned. Principal lemma awn 4–5 mm long overall. Palea 1 length of lemma; 2 -veined. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 0.7–1.2 mm long. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp; 3 mm long. Hilum linear.

DISTRIBUTION Asia-temperate: Siberia, Soviet far east, China, and eastern Asia.

NOTES Poeae. Fl USSR 1996.

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