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Descriptions

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

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

Tripogon anantaswamianus

HABIT Perennial; caespitose; clumped densely. Culms erect; 30–50 cm long. Culm-nodes glabrous. Leaf-sheaths smooth; glabrous on surface. Ligule a ciliolate membrane. Leaf-blades convolute; 25–40 cm long; 1–2 mm wide; glaucous. Leaf-blade midrib conspicuous. Leaf-blade surface glabrous, or pilose; sparsely hairy.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; unilateral; 15–20 cm long. Rhachis angular; smooth on margins; glabrous on margins. Spikelet packing broadside to rhachis; crowded; regular; 2 -rowed.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 7–10 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 8–15 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.

GLUMES Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate, or ovate; 4–5 mm long; 0.66 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex with a unilateral tooth; obtuse; awned; 1 -awned. Lower glume awn 1 mm long. Upper glume lanceolate; 7–8 mm long; 1.4 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex emarginate; awned; 1 -awned. Upper glume awn 1 mm long.

FLORETS Fertile lemma oblong; 5–6 mm long; 2.5 mm wide; coriaceous; grey; without keel; 3 -veined. Lemma apex dentate; 6 -fid; with simple equal lobes; acuminate; awned; 3 -awned. Principal lemma awn from a sinus; 2 mm long overall. Lateral lemma awns arising on apex of lobes; 2 mm long; subequal to principal. Palea elliptic; 3–4 mm long; 2 -veined. Palea keels ciliolate; adorned all along. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; 0.5 mm long. Anthers 2; 1.5–2 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: India.

NOTES Eragrostideae. Gr Kerala 1997.

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