Dimeria fuscescens

HABIT Perennial. Culms erect, or geniculately ascending, or decumbent; 30–60 cm long; without nodal roots, or rooting from lower nodes. Ligule an eciliate membrane. Leaf-blades 4–15 cm long; 2–5 mm wide.

INFLORESCENCE Inflorescence composed of racemes.

Racemes (2–)3(–4); digitate; sinuous; unilateral; 5–11 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; 4–5.5 mm long; falling entire. Spikelet callus pubescent; base truncate, or obtuse.

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 smooth; ciliate. Lower glume apex acute. Upper glume elliptic; coriaceous; with hyaline margins; 1-keeled; winged on keel; winged all along, or near apex; 3 -veined. Upper glume primary vein smooth; ciliate. Upper glume apex acute.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; hyaline; ciliolate on margins. Fertile lemma elliptic; 3.5 mm long; without keel; 1 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 6–11 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.

FLOWER Anthers 2.

DISTRIBUTION Asia-tropical: India and Indo-China.

NOTES Andropogoneae. WDC.

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