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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 santapaui

HABIT Annual; caespitose. Culms erect, or geniculately ascending; slender; 10–25 cm long; 3–4 -noded. Culm-internodes distally hirsute. Lateral branches sparse. Ligule an eciliate membrane; 1.5–2 mm long. Leaf-blades flat, or conduplicate; 6–10 cm long; 1.5–3 mm wide. Leaf-blade surface hirsute. Leaf-blade apex acute.

INFLORESCENCE Inflorescence composed of racemes; terminal and axillary. Peduncle hirsute above; widened at apex.

Racemes 1; single; unilateral; 3–6 cm long. Rhachis fragile at the nodes; subcylindrical and excavated; 4–6 mm wide; glabrous on surface; villous on margins. Spikelet packing abaxial. Rhachis internodes oblong; 2–2.5 mm long. Rhachis internode tip oblique; crateriform.

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; male; oblong, or ovate; asymmetrical; 4 mm long; shorter than fertile; deciduous with the fertile. Companion sterile spikelet glumes coriaceous; winged on keels; 5 -veined; acuminate; awned; one glume awned; with 5 mm long awn.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong, or ovate; dorsally compressed; 4.5–5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base truncate; with central peg; inserted.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong, or ovate; 1 length of spikelet; indurate; much thinner above; 2-keeled; keeled laterally; winged on keel; winged broadly; winged above. Lower glume surface smooth; pilose; hairy below. Lower glume margins ciliate. Lower glume apex awned; 1 -awned. Lower glume awn 3.5–7 mm long. Upper glume elliptic; membranous; without keels; 3 -veined.

FLORETS Basal sterile florets barren; with palea. Lemma of lower sterile floret oblong; 2.25–2.5 mm long; hyaline. Fertile lemma elliptic; 2.25–2.5 mm long; hyaline; without keel.

FLOWER Anthers 3; 1.5 mm long.

DISTRIBUTION Asia-tropical: India.

NOTES Andropogoneae. Jain.

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