Puccinellia arjinshanensis

HABIT Perennial; caespitose. Culms erect; 20–30 cm long; 1 mm diam. Leaf-sheaths smooth. Ligule an eciliate membrane; 2 mm long; obtuse. Leaf-blades conduplicate, or involute; 3–7 cm long; 1–1.5 mm wide; stiff. Leaf-blade surface scabrous; rough adaxially. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 5–10 cm long; 4 cm wide. Primary panicle branches 1–2 -nate. Panicle branches smooth.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–5 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4–7 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 2–2.5 mm long; 0.66 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Upper glume elliptic; 3 mm long; 0.75 length of adjacent fertile lemma; membranous; without keels; 3 -veined.

FLORETS Fertile lemma oblong; 3.5–4 mm long; membranous; much thinner on margins; without keel; 5 -veined. Lemma lateral veins obscure. Lemma surface pubescent; hairy between veins. Palea 2 -veined. Palea keels scabrous; ciliate; adorned below. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 0.8–1.2 mm long.

DISTRIBUTION Asia-temperate: China.

NOTES Poeae. Fl China 2005.

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