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Herbarium specimen. Copyright DERM
Cyperus aquatilis R.Br.
Brown, R. (1810) Prodromus Florae Novae Hollandiae: 213. Type: ?.
Cyperus trinervis var. aquatilis (R.Br.) Kuk., Das Pflanzenreich 101: 294(1936), Type: ?.
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.
Distribution and Ecology
Occurs in WA, NT, CYP, NEQ, CQ and NSW. Altitudinal range from 20-1150 m. Grows in rainforest, notophyll vine forest, common in swampy places, on creek banks and in creek beds, also in various types of woodland. Also occurs in Indonesia and New Guinea.