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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 notata

HABIT Perennial; culms solitary, or caespitose. Culms decumbent; 30–75 cm long; spongy; rooting from lower nodes. Leaf-sheaths tubular for much of their length; with 1 of their length closed; keeled; striately veined; smooth; glabrous on surface. Ligule an eciliate membrane; 2–8 mm long; obtuse. Leaf-blades flat, or conduplicate; 5–30 cm long; 3–14 mm wide. Leaf-blade surface scaberulous; rough abaxially, or on both sides. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; lanceolate, or oblong; 10–45 cm long. Primary panicle branches spreading; 2–5 -nate; simple; 3–12 cm long. Panicle branches scabrous.

Spikelets ascending; solitary. Fertile spikelets pedicelled. Pedicels 1–6 mm long.

FERTILE SPIKELETS Spikelets comprising 7–16 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; compressed slightly; 10–25 mm long; 1.5–2 mm wide; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume elliptic, or oblong; 1.5–2.5 mm long; 0.6–0.7 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume elliptic, or oblong; 2.5–4 mm long; 0.7–0.8 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex obtuse.

FLORETS Fertile lemma oblong; 3.5–5 mm long; membranous; much thinner above; without keel; 7 -veined. Lemma surface scaberulous. Lemma apex obtuse. Palea 0.9–1 length of lemma; 2 -veined. Palea keels winged; narrowly winged. Palea apex dentate; 2 -fid; obtuse. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; united; oblong; fleshy; truncate. Anthers 3; 1–1.5 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 2 mm long. Embryo 0.2 length of caryopsis. Hilum linear; 1 length of caryopsis.

DISTRIBUTION Europe: northern, central, southwestern, southeastern, and eastern. Africa: north. Asia-temperate: Siberia, Soviet far east, Soviet Middle Asia, Caucasus, western Asia, China, and Mongolia. Asia-tropical: India. Australasia: Australia and New Zealand. North America: eastern Canada. South America: Mesoamericana.

NOTES Meliceae. CEH.

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