Polypogon pygmeus

HABIT Annual. Culms 2–7 cm long. Culm-internodes smooth; distally glabrous. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 0.6–1.5 mm long. Leaf-blades flat, or conduplicate; 0.6–1.3 mm wide. Leaf-blade surface scaberulous.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; lanceolate, or oblong; 0.5–1.4 cm long; 0.4–0.5 cm wide. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; 0.2 mm long.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 1.2–2.5 mm long; falling entire. Spikelet callus oblong, or cuneate.

GLUMES Glumes similar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of upper glume; membranous; 1-keeled; keeled above; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume margins ciliolate. Lower glume apex dentate; 2 -fid; awned; 1 -awned. Lower glume awn 2–3 mm long. Upper glume oblong; 1.2–1.5 mm long; 1.4–1.5 length of adjacent fertile lemma; membranous; 1-keeled; keeled above; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume surface asperulous. Upper glume margins ciliolate. Upper glume apex dentate; 2 -fid; awned; 1 -awned. Upper glume awn 2–3 mm long.

FLORETS Fertile lemma oblong; 0.8–1.1 mm long; hyaline; shiny; without keel; 5 -veined. Lemma lateral veins obscure. Lemma apex muticous. Palea 1 length of lemma; hyaline; 2 -veined.

FLOWER Anthers 3; 0.2–0.4 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: western Asia.

NOTES Aveneae. Tsvelev 2002.

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