Cyperus aquatilis R.Br.
Brown, R. (1810) Prodromus Florae Novae Hollandiae : 213.
Slender tufted annual. Culms triquetrous, smooth, 7-50 cm tall.
Leaves mostly shorter than culms; leaf blades 0.5-4 mm wide. Leaf sheaths with hayline margin.
Inflorescence simple or compound, with 2-6 primary branches up to 15 cm long; digitate clusters about 15 mm diameter; involucral bracts leaf-like, 1 or rarely 2 shorter but sometimes as long as the inflorescence. Rachilla straight, wingless. Spikelets flattened, solitary or 2-8 per cluster, 4-18 x 2-3 cm, 10-30 flowered. Glumes acute, 1.5-2 mm long, whitish, often reddish brown with a green keel and with 1 prominent vein on each side
Features not available.