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GrassBase - The Online World Grass Flora
Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Glyceria arundinacea
HABIT Perennial. Culms erect; 70–150 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 15–30 cm long; 3–8 mm wide; mid-green, or grey-green. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade margins scaberulous.
INFLORESCENCE Inflorescence a panicle.
Panicle open; ovate; 15–20 cm long. Primary panicle branches spreading. Panicle branches scaberulous.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 2–5 fertile florets; with diminished florets at the apex. Spikelets elliptic, or ovate; laterally compressed; 6–7 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume elliptic; 1–1.5 mm long; 0.66 length of upper glume; membranous; without keels. Lower glume apex acute. Upper glume elliptic; 1.5–2.5 mm long; 0.5 length of adjacent fertile lemma; membranous; without keels. Upper glume apex acute.
FLORETS Fertile lemma elliptic; 3–4 mm long; membranous; much thinner above; without keel; 5–7 -veined. Lemma surface asperulous. Lemma apex acute. Palea 3 mm long; 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; 0.7–1.2 mm long.
FRUIT Caryopsis with adherent pericarp. Hilum linear.
DISTRIBUTION Europe: southeastern and eastern. Asia-temperate: Caucasus and western Asia.
NOTES Meliceae. Fl Turk 1993.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.