Tripogon lisboae

HABIT Perennial; caespitose. Culms erect; 20–60 cm long. Ligule an eciliate membrane; 0.2 mm long. Leaf-blades linear; flat, or convolute; 15–40 cm long; 3–6 mm wide. Leaf-blade apex filiform.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; straight; unilateral; 7–25 cm long. Rhachis angular. Spikelet packing broadside to rhachis; regular; 2 -rowed.

Spikelets ascending; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 5–10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4–10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.

GLUMES Glumes persistent; dissimilar; shorter than spikelet; firmer than fertile lemma. Lower glume lanceolate; 1 mm long; 0.3–0.4 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume elliptic; 3–3.5 mm long; 0.9–1 length of adjacent fertile lemma; coriaceous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate; mucronate.

FLORETS Fertile lemma ovate; 3–5 mm long; chartaceous; keeled; 3 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; 1–2 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels winged; narrowly winged; scaberulous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 0.8 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: India.

NOTES Eragrostideae. WDC.

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