Muhlenbergia angustata

HABIT Perennial; caespitose; clumped densely. Culms erect; 50–100 cm long. Ligule an eciliate membrane; 5–8 mm long. Leaf-blades conduplicate; 10–30 cm long; 2–4 mm wide; stiff. Leaf-blade surface scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; linear; 10–20 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 6–7 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 5.5–6.5 mm long; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous. Lower glume apex acuminate. Upper glume lanceolate; 5.5–6.5 mm long; 0.9 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume surface scabrous. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; 6–7 mm long; membranous; without keel; 3 -veined. Lemma surface scabrous. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 5–6 mm long overall. Palea 2 -veined.

FLOWER Lodicules 2; cuneate; fleshy. Anthers 3.

FRUIT Caryopsis with adherent pericarp; fusiform.

DISTRIBUTION South America: western South America and southern South America.

NOTES Eragrostideae. Gr Peru 1995.

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