Citation: K.L. Wilson, Telopea 2:168 (1981).

Synonymy: Scirpus productus C.B. Clarke, Kew Bull. add. ser. 8:28 (1908).

Common name: None

Description:
Stems filiform, weak, floating, often many-noded (similar to I. fluitans but sometimes more slender and always strongly tinged with purple, particularly on the leaf sheaths and at the edge of the glumes); leaves very slender.

Spikelet solitary, terminal on long peduncles rising from the tufts of leaves, ovoid, 3-5 mm long; glumes 6-10, nearly all containing bisexual flowers, the lowest glume always produced into a leafy point as long as or longer than ,the spikelet; stamens usually 2; style branches 2.

Nut ellipsoid, acute, cuneate, c. 1.3 x 0.8 mm, biconvex rather than slightly 3-angled, often thinned towards the sides next to the axis, the back strongly convex, light-brown, rather dull, half the length of the glume.

Distribution:  S.Aust.: SL, KI, SE.   W.Aust.; N.S.W.; Vic.; Tas. Conservation status: native Flowering time: Oct. — March.

SA Distribution Map based on current data relating to specimens held in the State Herbarium of South Australia

Biology: Similar to I. fluitans but lacking the special terrestrial form.

Author: Not yet available