Poa uzonica

HABIT Perennial; caespitose. Rhizomes short. Butt sheaths persistent and investing base of culm; with compacted dead sheaths. Culms 30–50 cm long; with 0.66 of their length below uppermost node. Culm-internodes smooth. Leaf-sheaths with 0.5 of their length closed; smooth. Ligule an eciliate membrane; 1.4–2 mm long; truncate, or obtuse. Leaf-blades 1–2 mm wide. Leaf-blade surface glabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 5–7 cm long. Primary panicle branches ascending. Panicle branches flexuous; scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 4–5.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous, or sparsely hairy. Floret callus pubescent.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2.9–3.8 mm long; membranous; 1-keeled. Lower glume apex acute. Upper glume lanceolate; 2.9–3.8 mm long; membranous; 1-keeled. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 3.6–5.3 mm long; membranous; keeled; 5 -veined. Lemma midvein pubescent; hairy below. Lemma surface asperulous; puberulous; hairy below. Lemma apex acute. Palea keels scabrous. Palea surface puberulous; hairy on back. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 1.7–1.8 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: Soviet far east.

NOTES Poeae. Probatova 2008.

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