Agrostis schaffneri

HABIT Perennial; culms solitary, or caespitose. Culms erect; 60–80 cm long. Culm-internodes smooth. Leaves cauline. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 3–5 mm long. Leaf-blades 12–18 cm long; 2–4 mm wide. Leaf-blade surface scabrous.

INFLORESCENCE Inflorescence a panicle; embraced at base by subtending leaf.

Panicle open; oblong; 15–30 cm long. Primary panicle branches ascending, or spreading; whorled at most nodes; 6–12 cm long. Panicle axis scabrous. Panicle branches stiff; scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2.5–3 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny. Lower glume lanceolate; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2.5–3 mm long; 1.6–2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 1.5 mm long; hyaline; without keel; 5 -veined. Lemma lateral veins extending close to apex. Lemma apex erose; truncate; muticous. Palea absent or minute.

FLOWER Lodicules 2; membranous. Anthers 3.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION North America: Mexico.

NOTES Aveneae. N Amer Fl 1994.

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