Dimeria avenacea

HABIT Annual. Culms erect; slender; 8–30 cm long. Ligule an eciliate membrane. Leaf-blades 1–9 cm long; 1–3 mm wide.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; straight; unilateral; 1–5 cm long. Rhachis angular; glabrous on margins. Spikelet packing crowded; regular; 2 -rowed.

Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels cuneate; flattened.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; compressed strongly; 4–7 mm long; falling entire. Spikelet callus cuneate; 1–1.5 mm long; pubescent; base acute.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; coriaceous; 1-keeled; wingless; 3 -veined. Lower glume primary vein eciliate. Lower glume surface glabrous, or pilose. Lower glume apex acuminate. Upper glume elliptic; coriaceous; with hyaline margins; 1-keeled; wingless, or winged on keel; winged all along; 3 -veined. Upper glume primary vein eciliate. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 1.5–4 mm long.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; hyaline. Fertile lemma elliptic; without keel; 1 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 10–15 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.

FLOWER Anthers 2.

DISTRIBUTION Asia-tropical: India.

NOTES Andropogoneae. WDC.

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