Poa nankoensis

HABIT Perennial; caespitose. Culms slender; 15–25 cm long; 0.5–1 mm diam. Culm-internodes terete. Lateral branches lacking. Ligule an eciliate membrane; 1.5–3 mm long; obtuse. Leaf-blades 5–8 cm long; 2–2.5 mm wide. Leaf-blade apex abruptly acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 5 cm long. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2–4 fertile florets; with diminished florets at the apex. Spikelets obovate; laterally compressed; 6 mm long; 4 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth. Floret callus woolly.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 3.5–4 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume oblong; 5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; elliptic in profile; 5 mm long; membranous; much thinner on margins; keeled; 5 -veined. Lemma midvein ciliate. Lemma surface pubescent; hairy on veins. Lemma margins ciliate; hairy below. Lemma apex acute. Palea keels scaberulous; adorned above. Apical sterile florets resembling fertile though underdeveloped.

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

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: eastern Asia.

NOTES Poeae. Taiwan Gr 1997.

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