Greek diplos – double, arren – male, referring to the two fertile stamens.
Tufted evergreen perennial herbs with short rhizomes. Leaves flat, erect, 2 ranked in fans. Stem erect, with few reduced leaves, rarely branched. Flowers appearing one at a time from a green terminal spathe, bilaterally symmetrical. Perianth segments free, white, the outer broad, the inner narrower and oblong. Fertile stamens 2, the third without an anther. Style with 2 thread-like branches. Ooccasionally spelled Diplarrhena
2 species in southern Australia.
Division in winter, or seed.
Evergreen tufts; flowers like a white, asymmetrical Iris.
Cooke (1986).
Source: (2005). Iridaceae. In: . Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.