Flora of New Zealand Series

Leaves mostly floating, long- or short-petiolate, mostly broad-elliptic and subacute, longitudinal nerves (11)-13-21. Spike 1-2 cm long, dense. Achenes swollen, not obviously keeled, often reddish.

N., S., St. Swamps; sometimes in still pools

FL. 12-2. FT. 1-3.