Deyeuxia nagarum

HABIT Perennial. Culms erect; 50–100 cm long. Lateral branches lacking. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 1–2 mm long. Leaf-blades 15–30 cm long; 2–4 mm wide; light green.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; effuse; 10–20 cm long. Primary panicle branches spreading; 3–5 -nate. Panicle branches capillary; flexuous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4.5–5.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate, or ovate; 4.5–5.5 mm long; 1.1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate; awned; 1 -awned. Upper glume lanceolate; 4–5 mm long; 1.2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acuminate; awned; 1 -awned.

FLORETS Fertile lemma lanceolate; 3.5–4 mm long; membranous; without keel; 5 -veined. Lemma lateral veins excurrent. Lemma surface scaberulous; rough above. Lemma apex awned; 1 -awned. Principal lemma awn dorsal; arising 0.75–0.8 way up back of lemma; flexuous; 4–5 mm long overall. Palea 2.5–3 mm long; hyaline; 2 -veined. Rhachilla extension 1 mm long; pilose; hairy at tip; with 3 mm long hairs.

FLOWER Lodicules 2. Anthers 3; 1.5 mm long. Stigmas 2.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-tropical: India.

NOTES Aveneae. Fl Assam 1993.

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