Diagnostic features as in key to varieties. Flowers mainly Oct.–Jan.
VVP, VRiv, GipP, CVU, NIS, EGL, EGU, HSF, HNF. Naturalised all States except NT. Native to South America. Sparsely distributed throughout Victoria in swampy areas, besides watercourses or disturbed sites with moist soil.
Flowers with 4-toothed calyces have been observed on rare occasions in the same inflorescence as flowers with 5-toothed calyces.
