Antinoria agrostidea

HABIT Annual, or perennial; short-lived. Culms geniculately ascending, or decumbent; 5–30 cm long; without nodal roots, or rooting from lower nodes. Leaf-sheaths smooth. Ligule an eciliate membrane; 3 mm long; lacerate. Leaf-blades 2–12 cm long; 1–2.5 mm wide. Leaf-blade surface scabrous; rough adaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 1–10 cm long; 0.5–7 cm wide. Primary panicle branches branching divaricately. Panicle branches capillary.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; glabrous; tip pyriform.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 1.5–2 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny. Lower glume ovate; 1.5–2 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein scaberulous. Lower glume apex obtuse. Upper glume ovate; 1.5–2 mm long; 2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scaberulous. Upper glume apex obtuse.

FLORETS Fertile lemma elliptic; 0.7–0.8 mm long; hyaline; without keel; 3 -veined. Lemma apex dentate; 3 -fid; truncate. Palea linear; 1 length of lemma.

FLOWER Anthers 3; 0.5–0.7 mm long.

FRUIT Caryopsis with adherent pericarp; obovoid; dorsally compressed; plano-convex.

DISTRIBUTION Europe: southwestern. Africa: north.

NOTES Aveneae. Fl Eur.

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