GrassBase - The Online World Grass Flora


W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Dimeria falcata

HABIT Annual; caespitose; clumped loosely. Culms 40–50 cm long; 7–9 -noded. Culm-nodes bearded. Lateral branches ample. Leaf-sheaths pubescent. Ligule a ciliolate membrane; 0.4–0.5 mm long. Leaf-blades 6–10 cm long; 2–3 mm wide. Leaf-blade surface pubescent; hairy on both sides. Leaf-blade margins scaberulous.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 2; paired; arcuate; unilateral; 2–6 cm long. Rhachis narrowly winged; flattened; 0.6 mm wide; ciliate on margins. Spikelet packing regular; 2 -rowed.

Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels cuneate; flattened; 0.5 mm long; pubescent.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; compressed strongly; 4 mm long; falling entire. Spikelet callus oblong; pubescent; base obtuse. Spikelet callus hairs 0.8–1 mm long.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; coriaceous; red; 1-keeled; 3 -veined. Lower glume primary vein ciliate. Lower glume margins eciliate, or ciliolate. Lower glume apex acute. Upper glume lanceolate; coriaceous; with hyaline margins; 1-keeled; 3 -veined. Upper glume primary vein ciliate. Upper glume apex acute.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 2–2.5 mm long; hyaline; ciliolate on margins; obtuse. Fertile lemma elliptic; 3 mm long; hyaline; without keel; 1 -veined. Lemma margins eciliate, or ciliolate. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 7 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.

FLOWER Anthers 2; 2 mm long.

DISTRIBUTION Asia-temperate: China and eastern Asia. Asia-tropical: Indo-China.

NOTES Andropogoneae. Lecomte 1994.

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