Tricoryne R.Br.

Erect, glabrous or variously hairy herbs; stems green, terete, angled or flattened and leaf-like. Rhizome horizontal or erect, often very short; roots thick or fibrous. Leaves basal and/or cauline, more or less linear or reduced to scales, alternate, often amplexicaul at the base. Inflorescence of terminal umbels surrounded by small scarious bracts and outer larger, sometimes leaf-like bracts. Pedicels articulated just below the flower. Perianth segments free or shortly connate, equal or sub-equal, with 3 or 5 (less often 7) prominent veins, spreading. Filaments filiform, with a dense tuft of hairs in the distal part, attached to the receptacle; anthers basifixed, linear to oblong; introrse. Ovary superior, sessile, deeply 3-lobed, 3-celled; ovules basal, 2 in each locule; style filiform, simple, minutely capitate. Fruit consisting of (1-)3 indehiscent nutlets; perianth segments adhering, marcescent, twisting spirally after flowering. Seeds subglobose.

Low altitude plant. Bailey recorded most of the Queensland species from 'sandy shores' and specimen annotations suggest a preference for sandy soils in grassland or savanna.