Glyceria depauperata

HABIT Perennial. Rhizomes elongated. Culms erect, or geniculately ascending; 20–40 cm long; 1–1.7 mm diam.; 2–4 -noded. Culm-internodes 6–12 cm long. Leaf-sheaths tubular for much of their length; with 1 of their length closed; smooth; glabrous on surface. Ligule an eciliate membrane; 2–5 mm long; white. Leaf-blades 3–5 cm long; 2–4 mm wide; light green. Leaf-blade surface smooth; glabrous. Leaf-blade apex abruptly acute.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 10–25 cm long; 1–1.5 cm wide. Primary panicle branches appressed; 1–3 -nate; simple; bearing 1–4 fertile spikelets on each lower branch.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 7–15 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; compressed slightly; 10–25 mm long; 2.5–3 mm wide; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate, or ovate; 0.8–1 mm long; 0.5 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate, or ovate; 1.8–2.2 mm long; 0.33–0.75 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma elliptic, or ovate; 2.5–3.5 mm long; membranous; much thinner above; much thinner on margins; without keel; 7 -veined. Lemma apex obtuse. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate. Palea apex emarginate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; united; oblong; fleshy; truncate. Anthers 3; 0.5–0.7 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION Asia-temperate: Soviet far east and eastern Asia.

NOTES Meliceae. Koyama 1994.

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