Agrostis nebulosa

HABIT Annual. Culms erect, or geniculately ascending; 25–50 cm long; 2–3 -noded. Culm-internodes smooth. Leaf-sheaths scaberulous; glabrous on surface. Ligule an eciliate membrane; 1.5–3.5 mm long; erose. Leaf-blades flat; 3–10 cm long; 1–3.5 mm wide. Leaf-blade surface scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 12–20 cm long; 6–10 cm wide. Primary panicle branches 10–15 -nate; whorled at most nodes.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels clavate; 5–12 mm long; 4–7 length of fertile spikelet.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 1.3–1.7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny; gaping. Lower glume lanceolate; 1.3–1.7 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate; 1.3–1.7 mm long; 2–3 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex obtuse.

FLORETS Fertile lemma elliptic; 0.4–0.8 mm long; hyaline; without keel; 5 -veined. Lemma lateral veins extending close to apex. Lemma apex erose; truncate; muticous. Palea 0.4–0.6 mm long; 0.75–1 length of lemma; hyaline.

FLOWER Lodicules 2; membranous. Anthers 3; 1 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION Europe: southwestern. Africa: north. South America: southern South America.

NOTES Aveneae. Gr Extremad 1993.

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