Twining, aquatic or sub-aquatic perennial, herb, 0.2-1.2 m high, peduncles twining for support; calyx lobes 2; corolla c. 20 mm wide; palate with 2 yellow ridges. Fl. violet-purple, Sep to Dec. Peaty soils. Usually in water 5-45 cm deep, swamps.
Beard’s Provinces: South-West Province.
IBRA Regions: Esperance Plains, Jarrah Forest, Swan Coastal Plain, Warren.
IBRA Subregions: Northern Jarrah Forest, Perth, Recherche, Southern Jarrah Forest, Warren.
IMCRA Regions: WA South Coast.
Local Government Areas (LGAs): Albany, Bayswater, Collie, Cranbrook, Esperance, Gingin, Manjimup, Mundaring, Plantagenet, Wanneroo.