Poa koksuensis

HABIT Perennial. Rhizomes elongated. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms geniculately ascending; 20–40 cm long. Lateral branches lacking. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 0.5–1 mm long; obtuse. Leaf-blades 2–3 mm wide. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 3–5 cm long; bearing few spikelets.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4–6 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; membranous; 1-keeled. Lower glume apex obtuse, or acute. Upper glume ovate; membranous; 1-keeled. Upper glume apex obtuse, or acute.

FLORETS Fertile lemma ovate; 3–4 mm long; membranous; keeled; 5 -veined. Lemma lateral veins distinct. Lemma apex obtuse, or acute. Palea keels smooth. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3; 2–3 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: Soviet Middle Asia.

NOTES Poeae. Golub 1995.

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