Agrostis nipponensis

HABIT Perennial; caespitose. Rhizomes absent. Culms 40–70 cm long; 1.5–2.2 mm diam.; 3–4 -noded. Leaves basal and cauline. Ligule an eciliate membrane; 1–3 mm long; truncate. Leaf-blades 7–17 cm long; 3–5 mm wide. Leaf-blade surface scabrous; rough on both sides.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 10–25 cm long; 5–7 cm wide. Primary panicle branches 3–7 -nate. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 3.3–3.6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet; firmer than fertile lemma. Lower glume lanceolate; 3 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; 3 mm long; 0.8–0.9 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume apex acute.

FLORETS Fertile lemma ovate; 3.3–3.6 mm long; hyaline; without keel; 3–5 -veined. Lemma apex obtuse; muticous. Palea 0.15 length of lemma; hyaline; 2 -veined.

FLOWER Lodicules 2; membranous. Anthers 3; 0.7–1 mm long.

FRUIT Caryopsis with adherent pericarp; obovoid; 1.5 mm long. Hilum linear. Endosperm farinose.

DISTRIBUTION Asia-temperate: eastern Asia.

NOTES Aveneae. Koyama.

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