Glyceria nubigena

HABIT Perennial. Culms 100–200 cm long. Culm-internodes smooth. Leaf-sheaths tubular for much of their length; longer than adjacent culm internode; smooth, or scaberulous; glabrous on surface. Ligule an eciliate membrane; 1 mm long; truncate. Leaf-blades 20–45 cm long; 6–10 mm wide. Leaf-blade surface scabrous; rough adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 20–30 cm long. Primary panicle branches spreading, or reflexed. Panicle branches stiff.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.

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

FLORETS Fertile lemma oblong; 2.5 mm long; membranous; dark green; without keel; 7 -veined. Lemma lateral veins prominent. Lemma apex erose; obtuse. Palea 2 -veined. Apical sterile florets resembling fertile though underdeveloped.

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

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION North America: southeast USA.

NOTES Meliceae. Man US Gr 1997.

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