Agrostis lehmannii

HABIT Perennial. Culms geniculately ascending; 20–40 cm long. Lateral branches lacking. Leaf-sheaths longer than adjacent culm internode; glabrous on surface. Ligule an eciliate membrane; 7–8 mm long; pubescent on abaxial surface; lacerate. Leaf-blades 6–8 cm long; 2.5–3 mm wide. Leaf-blade surface scaberulous. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; lanceolate; 13 cm long; 3 cm wide. Primary panicle branches ascending, or spreading; bearing spikelets almost to the base.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets. Spikelets elliptic; laterally compressed; 3–3.5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 3–3.5 mm long; 1.1 length of upper glume; membranous; purple; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; membranous; purple; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 1.3 mm long; hyaline; without keel; 5 -veined. Lemma lateral veins excurrent. Lemma surface glabrous. Lemma apex truncate; awned; 1 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; geniculate; 6 mm long overall; with a straight or slightly twisted column. Palea absent or minute.

FLOWER Lodicules 2; 0.7 mm long; membranous. Anthers 3; 0.6 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION South America: western South America.

NOTES Aveneae. Swallen 2004.

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