Agrostis nervosa

HABIT Annual. Culms erect, or geniculately ascending; 20–45 cm long; 2–3 -noded. Culm-nodes brown. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 1–2 mm long. Leaf-blades 6–8 cm long; 1–2 mm wide. Leaf-blade surface scaberulous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; lanceolate, or pyramidal; 3–12 cm long; 0.5–6 cm wide. Primary panicle branches whorled at lower nodes. Panicle branches capillary; smooth, or scaberulous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 2–3 mm long; smooth, or scaberulous.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 2.7–3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous, or pubescent.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny; gaping. Lower glume elliptic, or oblong; 2.7–3.5 mm long; 1 length of upper glume; membranous; mid-green, or purple; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute, or acuminate. Upper glume lanceolate, or elliptic; 2.6–3.15 mm long; 1.3–1.7 length of adjacent fertile lemma; membranous; mid-green, or purple; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma oblong, or ovate; 1.5–2.4 mm long; hyaline; without keel; 5 -veined. Lemma lateral veins extending close to apex. Lemma surface scaberulous. Lemma apex erose; truncate; muticous. Palea 0.5–0.8 mm long; 0.33 length of lemma; hyaline; 0 -veined.

FLOWER Lodicules 2; membranous. Anthers 3; 0.5 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION Asia-temperate: China. Asia-tropical: India.

NOTES Aveneae. Rajbhandari 1994.

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