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Descriptions

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

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

Glyphochloa divergens

HABIT Annual. Culms slender; 10–17 cm long; 2–3 -noded. Lateral branches sparse. Leaves basal and cauline. Leaf-sheaths keeled; pilose. Ligule an eciliate membrane; 0.5–0.75 mm long. Leaf-blades 8–10 cm long; 2–3 mm wide; flaccid. Leaf-blade surface pilose; hairy on both sides.

INFLORESCENCE Inflorescence composed of racemes; terminal and axillary.

Racemes 1; single; unilateral; 1.75–2.5 cm long. Rhachis fragile at the nodes; subcylindrical and excavated; glabrous on surface; smooth on margins. Spikelet packing abaxial. Rhachis internodes cuneate; 1.5 mm long. Rhachis internode tip transverse; crateriform; with hairy rim.

Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels fused to internode; united wholly; flattened.

STERILE SPIKELETS Companion sterile spikelets well-developed; comprising 2 subequal glumes without lemmas; lanceolate; 2.5–2.75 mm long; as long as fertile; deciduous with the fertile. Companion sterile spikelet glumes chartaceous; winged on keels; 5 -veined; acuminate; awned; one glume awned; with 2.5 mm long awn.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 2.5–2.75 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus glabrous; base truncate; with central peg; inserted.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; indurate; much thinner above; 2-keeled; keeled laterally; winged on keel; winged broadly; winged above. Lower glume surface cancellate; glabrous. Lower glume apex lobed; 2 -fid; awned; 2 -awned. Lower glume awn 2.5–3 mm long. Upper glume ovate; membranous; 1-keeled; 3 -veined.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 1.75–2 mm long; hyaline; 2 -veined. Fertile lemma ovate; 1.5 mm long; hyaline; without keel; 0 -veined.

DISTRIBUTION Asia-tropical: India.

NOTES Andropogoneae. Jain.

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