As for the species, but seeds smooth to slightly granular. Flowers and fruits Nov.–Apr.
Wim, GleP, Brid, DunT. Also SA, Tas. Known in Victoria only from swampland at Bridgewater Lakes, near Casterton and at Lake Fyans.
Aston, H.I. (1999). Menyanthaceae. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 4, Cornaceae to Asteraceae, pp. 380–385. Inkata Press, Melbourne.