Agrostis subrepens

HABIT Perennial. Rhizomes elongated. Culms erect; 60–100 cm long; 3–4 -noded; with 0.5 of their length below uppermost node. Culm-internodes smooth. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 3–5 mm long. Leaf-blades involute; 1–1.3 mm wide. Leaf-blade surface scaberulous. Leaf-blade apex hardened.

INFLORESCENCE Inflorescence a panicle.

Panicle open; pyramidal; 12–18 cm long; 10–15 cm wide. Primary panicle branches spreading; whorled at most nodes; 6–8 cm long. Panicle axis smooth. Panicle branches scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny. Lower glume lanceolate; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 2.5 mm long; 1.2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate.

FLORETS Fertile lemma elliptic; 2 mm long; hyaline; without keel; 5 -veined. Lemma lateral veins extending close to apex. Lemma apex erose; truncate; muticous. Palea 0.3 mm long; 0.1 length of lemma; hyaline.

FLOWER Lodicules 2; membranous. Anthers 3.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION North America: Mexico. South America: northern South America and western South America.

NOTES Aveneae. N Amer Fl 1994.

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