Glyceria triflora

HABIT Perennial. Rhizomes elongated. Culms erect; robust; 50–150 cm long; 4–8 mm diam. Leaf-sheaths tubular for much of their length; with 1 of their length closed; reticulately veined; smooth; glabrous on surface. Ligule an eciliate membrane; 2–4 mm long; acute. Leaf-blades 15–25 cm long; 5–10 mm wide; mid-green and grey-green; discolorous with last colour beneath. Leaf-blade surface smooth, or scaberulous; rough adaxially. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; obovate; 20–30 cm long. Primary panicle branches ascending, or spreading; 3–4 -nate. Panicle branches smooth, or scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong; laterally compressed; 5–8 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 1.5–2 mm long; 0.66–0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 2–3 mm long; 0.9–1 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex obtuse, or acute.

FLORETS Fertile lemma elliptic, or oblong; 2–3.5 mm long; membranous; without keel; 7 -veined. Lemma surface scaberulous; rough on veins. Lemma apex obtuse. Palea 1 length of lemma; 2 -veined. Palea keels wingless. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; united; oblong; fleshy; truncate. Anthers 3; 0.9–1.5 mm long.

DISTRIBUTION Europe: eastern. Asia-temperate: Siberia, Soviet far east, China, Mongolia, and eastern Asia.

NOTES Meliceae. Fl China 2007.

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