Agrostis juressii

HABIT Annual; caespitose; clumped loosely. Culms geniculately ascending; 40–60 cm long. Culm-internodes smooth. Lateral branches lacking. Leaf-sheaths without keel; smooth; glabrous on surface. Ligule an eciliate membrane; 0.5–1 mm long; truncate. Leaf-blades 6–12 cm long; 4–9 mm wide. Leaf-blade surface smooth. Leaf-blade margins scabrous. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; continuous, or interrupted; 5–10 cm long; 0.5–1.5 cm wide. Primary panicle branches 2–3 -nate. Panicle axis scaberulous. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous; tip rectangular.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 3 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 oblong; 3 mm long; 1 length of upper glume; chartaceous; purple; 1-keeled; 3 -veined. Lower glume lateral veins obscure. Lower glume surface scabrous. Lower glume apex acute. Upper glume oblong; 3 mm long; 1.2 length of adjacent fertile lemma; chartaceous; purple; 1-keeled; 3 -veined. Upper glume lateral veins obscure. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 2.5 mm long; membranous; without keel; 5 -veined. Lemma lateral veins excurrent. Lemma surface smooth, or asperulous; rough above. Lemma apex dentate; 4 -fid; obtuse; muticous. Palea 0.1–0.5 mm long; 0.05–0.2 length of lemma; hyaline.

FLOWER Lodicules 2; 0.3 mm long; membranous. Anthers 3; 1 mm long; yellow.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION Europe: southwestern. Africa: north.

NOTES Aveneae. Fl Afr N 1994.

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