Agrostis montevidensis

HABIT Perennial; caespitose. Culms erect; 20–80 cm long. Ligule an eciliate membrane; 1.5–3 mm long; erose. Leaf-blades 2–3 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle open; obovate; effuse; 10–30 cm long; 5–9 cm wide. Panicle branches capillary.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; 10–45 mm long; smooth, or scaberulous; tip widened.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 1.8–2.4 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; 1.8–2.4 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 1.8–2.4 mm long; 1.1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 1.5–2 mm long; hyaline; without keel; 5 -veined. Lemma apex dentate; 4 -fid; truncate; awned; 1 -awned. Principal lemma awn dorsal; arising 0.66–0.75 way up back of lemma; straight; 2–2.5 mm long overall; without a column. Palea absent or minute.

FLOWER Lodicules 2; membranous. Anthers 3; 0.8 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION Africa: south. South America: western South America, Brazil, and southern South America.

NOTES Aveneae. Fl Entre Rios 1995.

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