Poa orientalis

HABIT Perennial; caespitose. Culms 30–80 cm long; with 0.5 of their length below uppermost node. Culm-internodes smooth. Leaves mostly basal. Leaf-sheaths smooth. Ligule an eciliate membrane; (0.4–)0.5–1(–1.2) mm long. Leaf-blades flat, or convolute; 1–1.35 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; loose, or effuse. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2–3(–4) fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 2.5–3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous to pubescent. Floret callus bearded.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2–3.5 mm long; membranous; 1-keeled. Lower glume apex acute. Upper glume lanceolate; 2–3.5 mm long; membranous; 1-keeled. Upper glume apex acute.

FLORETS Fertile lemma ovate; 2.5–3.5 mm long; membranous; keeled; 5 -veined. Lemma surface pubescent; hairy on veins. Lemma apex acute. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3.

DISTRIBUTION Europe: eastern.

NOTES Poeae. Tzvelev 2011.

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