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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Glyceria leptolepis

HABIT Perennial; culms solitary. Rhizomes absent, or elongated. Culms erect; 80–150 cm long; 5–8 mm diam.; 10–16 -noded. Culm-internodes 5–12 cm long. Leaves cauline. Leaf-sheaths tubular for much of their length; with 1 of their length closed; smooth; glabrous on surface. Ligule an eciliate membrane; 0.8–1.3 mm long; truncate. Leaf-blades flat, or involute; 40–60 cm long; 5–13 mm wide. Leaf-blade surface scabrous; rough adaxially; glabrous. Leaf-blade margins scabrous. Leaf-blade apex abruptly acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic, or ovate; nodding; 20–30 cm long; 6–10 cm wide. Primary panicle branches 2–3 -nate; 4–12 cm long. Panicle axis scabrous. Panicle branches scabrous; rough distally.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 4–6 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 6–8 mm long; 2–3 mm wide; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 1.5–2 mm long; 0.5–0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate; 1.8–2.2 mm long; 0.66 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex obtuse.

FLORETS Fertile lemma lanceolate, or oblong; 3–3.5 mm long; membranous; much thinner above; yellow, or light green; without keel; 7 -veined. Lemma apex obtuse. Palea 1 length of lemma; 2 -veined. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; united; oblong; fleshy; truncate. Anthers 2; 0.6–0.7 mm long.

FRUIT Caryopsis with adherent pericarp; oblong; 1.5 mm long. Hilum linear.

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

NOTES Meliceae. Koyama 1994.

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