Glyceria tonglensis

HABIT Perennial; culms solitary, or caespitose. Rhizomes elongated. Culms decumbent, or prostrate; 20–80 cm long; rooting from lower nodes. Leaf-sheaths tubular for much of their length; with 1 of their length closed; smooth; glabrous on surface. Ligule an eciliate membrane; 1–3 mm long. Leaf-blades flat, or conduplicate; 10–30 cm long; 2–4 mm wide. Leaf-blade surface scaberulous; rough on both sides. Leaf-blade margins scabrous. Leaf-blade apex obtuse, or abruptly acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; lanceolate, or ovate; 10–30 cm long. Primary panicle branches appressed, or spreading (after anthesis); 3–10 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 4–6 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 6–8.5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 1–1.5 mm long; 0.66 length of upper glume; membranous; without keels. Lower glume apex entire, or erose; acute. Upper glume ovate; 1.5–2.5 mm long; 0.5–0.66 length of adjacent fertile lemma; membranous; without keels. Upper glume apex entire, or erose; acute.

FLORETS Fertile lemma oblong, or ovate; 3–3.5 mm long; membranous; much thinner above; without keel; 7 -veined. Lemma surface asperulous; rough on veins. Lemma apex erose; obtuse. Palea 2 -veined. Palea keels wingless. Palea apex dentate; 2 -fid. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; united; oblong; fleshy; truncate. Anthers 3.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION Asia-temperate: China. Asia-tropical: India.

NOTES Meliceae. Fl Pak 1993.

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