Flower and leaves. Australian Plant Image Index, photo: Murray Fagg, Australian National Botanic Gardens, ACT

Flowers and leaves. Photo: Richard Hartland, Barmah, Vic

Flowers and leaves. Photo: Don Wood, Carnarvon Station Bush Heritage Reserve via Augathella, Qld

Common Name

Wavy Marshwort

Family

Menyanthaceae

Notes

Perennial forb in fresh water to 1m deep or in mud, stems to 3m long. Leaves basal and alternating up the stems, base cordate, 3-20cm long, flat, more or less circular, hairless, deeply notched at the base, margins with rounded teeth or lobes. Flowers with with a short tube and 5 (occasionally 4 or 6) yellow 'petals', in spaced pairs along a short inflorescence or in clusters of 8-20 subtended by 1-4 stem leaves. Rare SA. Threatened list Vic.

Description and photo in G.M. Cunningham, WE Mulham, PL Milthorpe and J H Leigh (1981 and later printings) Plants of Western New South Wales page 551

PlantNET description:  http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Nymphoides~crenata