Agrostis divaricatissima

HABIT Perennial; caespitose. Culms erect; 50 cm long. Ligule an eciliate membrane. Leaf-blades 8–10 cm long; 2–3.5 mm wide.

INFLORESCENCE Inflorescence a panicle. Peduncle smooth.

Panicle open; ovate; 20 cm long; 10 cm wide. Primary panicle branches spreading.

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

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 2–2.5 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; gaping. Lower glume lanceolate; 2–2.5 mm long; 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; 2–2.5 mm long; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma ovate; 1.2–2 mm long; hyaline; without keel; 5 -veined. Lemma lateral veins extending close to apex. Lemma apex truncate; muticous. Palea 0.5 length of lemma; hyaline.

FLOWER Lodicules 2; 0.2 mm long; membranous. Anthers 3; 1 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION Asia-temperate: Siberia, China, Mongolia, and eastern Asia.

NOTES Aveneae. Man Korean Gr 1994.

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