Deyeuxia moupinensis

HABIT Perennial; caespitose; clumped loosely. Rhizomes short. Culms erect; 40–50 cm long; 2–3 mm diam.; 3–4 -noded. Leaf-sheaths glabrous on surface, or pubescent; with reflexed hairs. Ligule an eciliate membrane; 0.5 mm long; truncate. Leaf-blades flat, or involute; 10–25 cm long; 2–6 mm wide. Leaf-blade surface scabrous; rough on both sides.

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

Panicle contracted; linear; 8–14 cm long; 1.5–3 cm wide. Primary panicle branches 2–5 -nate.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 3.5–4 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 3 mm long; 1 length of lemma.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny. Lower glume lanceolate; 3.5–4 mm long; 1 length of upper glume; membranous; light green, or purple; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous. Lower glume apex acute. Upper glume lanceolate; 3.5–4 mm long; 1.2–1.5 length of adjacent fertile lemma; membranous; light green, or purple; 1-keeled; 3 -veined. Upper glume surface scabrous. Upper glume apex acute.

FLORETS Fertile lemma oblong; 3 mm long; hyaline; without keel; 5 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn subapical, or from a sinus; curved; 5–6 mm long overall; clearly exserted from spikelet. Palea 0.66 length of lemma; hyaline. Rhachilla extension 0.5 mm long; villous; with 2–3 mm long hairs.

FLOWER Lodicules 2; membranous. Anthers 3; 1.2 mm long.

DISTRIBUTION Asia-temperate: China.

NOTES Aveneae. Fl China 2003.

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