Glyceria potaninii

HABIT Perennial. Culms geniculately ascending, or decumbent; 40–80 cm long; 2.5–5 mm diam. Ligule an eciliate membrane; 3–6 mm long. Leaf-blades 3–5 mm wide. Leaf-blade surface smooth; puberulous; sparsely hairy; hairy adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; lanceolate; continuous, or interrupted. Panicle branches smooth.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 7–13 fertile florets; with diminished florets at the apex. Spikelets lanceolate, or oblong; laterally compressed; 20–35 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2.3–3 mm long; 0.66 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Upper glume lanceolate; 4–5 mm long; 0.66 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent.

FLORETS Fertile lemma ovate; 7–8.5 mm long; membranous; without keel. Palea 1.15 length of lemma; 2 -veined. Palea keels winged; narrowly winged. Palea apex dentate; 2 -fid. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 1–1.2 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China.

NOTES Meliceae. Tzvelev 2008.

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