Agrostis scabrifolia

HABIT Perennial; caespitose; clumped densely. Culms erect; 55 cm long. Culm-internodes antrorsely scabrous. Lateral branches lacking. Leaf-sheaths longer than adjacent culm internode; scaberulous. Ligule an eciliate membrane; 2.5–5 mm long; scaberulous on abaxial surface; entire, or erose; obtuse, or acute. Leaf-blades erect; 10–15 cm long; 2–3 mm wide; stiff. Leaf-blade surface scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; effuse; 10–15 cm long; 8 cm wide. Primary panicle branches ascending; 2–4 -nate.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets. Spikelets elliptic; laterally compressed; 2.8–3 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 2.8–3 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2.8–3 mm long; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 2 mm long; hyaline; without keel; 5 -veined. Lemma surface glabrous. Lemma apex erose; truncate; awned; 1 -awned. Principal lemma awn dorsal; curved; 4 mm long overall. Palea absent or minute.

FLOWER Lodicules 2; 0.7 mm long; membranous. Anthers 3.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION South America: western South America.

NOTES Aveneae. Swallen 2004.

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