Dimeria guangxiensis

HABIT Annual. Culms erect; 35–40 cm long; 6–8 -noded. Culm-nodes bearded. Lateral branches lacking. Leaf-sheaths pilose; with tubercle-based hairs. Ligule a ciliolate membrane; 0.5 mm long. Leaf-blades 2–5 cm long; 1.5–3.5 mm wide. Leaf-blade surface pubescent; densely hairy; with tubercle-based hairs. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1–2; single, or paired; erect; unilateral; 2.5–3.5 cm long.

Spikelets appressed; solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; compressed strongly; 3.5 mm long; falling entire. Spikelet callus pilose.

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

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate, or obovate; 2 mm long; hyaline; 0 -veined; without midvein; without lateral veins; ciliolate on margins. Fertile lemma elliptic; 2.5 mm long; hyaline; without keel; 1 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; curved, or geniculate; 8 mm long overall; without a column, or with twisted column. Column of lemma awn glabrous. Palea absent or minute.

FLOWER Anthers 2; 0.8 mm long.

DISTRIBUTION Asia-temperate: China.

NOTES Andropogoneae. Chen & Sheng 2000.

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