Ectrosia lasioclada

HABIT Perennial. Culms 30–70 cm long. Ligule a fringe of hairs. Leaf-blades 10–30 cm long; 1–3 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; oblong, or ovate; interrupted; 5–20 cm long. Panicle branches scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 10–25 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 5–18 mm long; breaking up at maturity; rhachilla persistent; retaining paleas. Rhachilla internodes 0.5 mm long.

GLUMES Glumes deciduous; similar; shorter than spikelet. Lower glume lanceolate; 1–1.5 mm long; 0.66–1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 1–1.5 mm long; 0.5 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile florets free at tip; increasing in size upwards. Fertile lemma ovate; lanceolate in profile; 2–3 mm long; membranous; keeled; 3 -veined. Lemma midvein scaberulous. Lemma apex acuminate; muticous, or awned; 1 -awned. Principal lemma awn 0–1.5 mm long overall. Palea 0.5 length of lemma; 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp; ellipsoid.

DISTRIBUTION Asia-tropical: Malesia and Papuasia. Australasia: Australia. Pacific: northwestern.

NOTES Eragrostideae. WDC.

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