Poa shumushuensis

HABIT Perennial; caespitose; clumped loosely. Rhizomes short. Culms 8–15 cm long. Lateral branches lacking. Leaf-sheaths 1.5–3 cm long; glabrous on surface. Ligule an eciliate membrane; truncate. Leaf-blades 1–3 cm long; 1–1.5 mm wide; flaccid. Leaf-blade apex abruptly acute; hooded.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; effuse; 2–4 cm long. Primary panicle branches spreading, or reflexed; 1–2 -nate; bearing 1–2 fertile spikelets on each lower branch. Panicle branches flexuous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with a barren rhachilla extension. Spikelets obovate; laterally compressed; 3–4 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus woolly.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2–2.5 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume ovate; 2–2.5 mm long; 0.8–0.9 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex obtuse.

FLORETS Fertile lemma ovate; 3–3.5 mm long; membranous; keeled; 5 -veined. Lemma midvein ciliolate; hairy below. Lemma margins ciliolate; hairy below. Lemma apex obtuse. Palea keels scaberulous; adorned above.

FLOWER Lodicules 2; membranous. Anthers 3; 1 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: Soviet far east.

NOTES Poeae. Ohwi 1995.

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