Poa vorobievii

HABIT Perennial; caespitose; clumped densely. Culms erect; curved; 35–70 cm long. Culm-internodes smooth. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths smooth. Ligule an eciliate membrane; (0.3–)1.1–1.5 mm long. Leaf-blades 1.3–2.5 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle open; lanceolate, or ovate; 6–15 cm long. Primary panicle branches ascending; with lower 0.33–0.5 length of panicle.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–5 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 2.8–6 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes scaberulous. Floret callus glabrous, or pilose.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume ovate; membranous; 1-keeled. Lower glume apex acuminate. Upper glume elliptic, or ovate; 3.8–4.5 mm long; 1.3 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acuminate.

FLORETS Fertile lemma ovate; oblong in profile; 2.8–3.5 mm long; membranous; keeled; 5 -veined. Lemma midvein ciliolate. Lemma margins ciliolate. Lemma apex obtuse. Palea keels scabrous. Palea surface puberulous; hairy on back. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 1.2–1.4 mm long.

DISTRIBUTION Asia-temperate: Soviet far east.

NOTES Poeae. Vasc Pl Russ Far East 2006.

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