Dimeria sinensis

HABIT Annual; caespitose. Culms erect; 10–50 cm long. Culm-nodes pubescent. Lateral branches lacking. Leaf-sheaths hirsute; outer margin hairy. Ligule a ciliolate membrane. Leaf-blades 3–5 cm long; 1–2 mm wide. Leaf-blade surface hirsute; hairy adaxially. Leaf-blade margins ciliate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; unilateral; 2–6 cm long. Rhachis flattened; 2 mm wide; ciliate on margins. Spikelet packing regular; 2 -rowed.

Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels oblong; flattened; 0.5 mm long; ciliate.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; compressed strongly; 2–3 mm long; falling entire. Spikelet callus pubescent; base obtuse.

GLUMES Glumes dissimilar; reaching apex of florets; firmer than fertile lemma. Lower glume linear; 1 length of spikelet; coriaceous; 1-keeled. Lower glume margins ciliate. Lower glume apex obtuse. Upper glume lanceolate; 1 length of spikelet; coriaceous; with hyaline margins; 1-keeled. Upper glume primary vein ciliate. Upper glume margins ciliate. Upper glume apex acute.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; hyaline; ciliolate on margins. Fertile lemma elliptic; 3 mm long; hyaline; without keel; 1 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 8–12 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.

FLOWER Anthers 2.

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

NOTES Andropogoneae. Kiangsu Gr 1994.

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