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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 lithuanica
HABIT Perennial; culms solitary. Stolons present. Culms erect; 70–110 cm long; 2–4 mm diam.; 4–6 -noded. Culm-internodes 5–15 cm long. Leaf-sheaths tubular for much of their length; with 1 of their length closed; smooth; glabrous on surface. Ligule an eciliate membrane; 2–3 mm long. Leaf-blades 20–30 cm long; 5–8 mm wide. Leaf-blade surface scaberulous; rough adaxially; glabrous. Leaf-blade apex obtuse, or abruptly acute, or acute.
INFLORESCENCE Inflorescence a panicle.
Panicle open; ovate; nodding; 15–25 cm long; 7–14 cm wide. Primary panicle branches 2–5 -nate; 10–14 cm long. Panicle branches scabrous.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 3–5 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 4–7 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 0.8–1 mm long; 0.66 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate; 1.3–1.5 mm long; 0.33–0.5 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex obtuse.
FLORETS Fertile lemma flabellate; 3–3.5 mm long; membranous; much thinner above; without keel; 7 -veined. Lemma apex obtuse. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 2; united; oblong; fleshy; truncate. Anthers 0.7 mm long.
FRUIT Caryopsis with adherent pericarp. Hilum linear.
DISTRIBUTION Europe: northern, central, and eastern. Asia-temperate: Siberia, Soviet far east, Caucasus, China, Mongolia, and eastern Asia.
NOTES Meliceae. Koyama 1994.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.