The bulb coverings are not netted. The roots are thin and fibrous. Leaves channelled. Stems 1-3 flowered, the falls not bearded and the standards upright, hardly reduced.

These are members of the subgenus Xiphium.

Source: Cooke, D. (2005). Iridaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.