Thysanotus formosus Brittan

Rootstock small; roots ±horizontal, somewhat fleshy, not tuberous. Leaves annual, 3 or 4, terete, c. 40 cm long, glaucous, surrounded by old leaf bases. Inflorescence racemose, rarely paniculate, c. 30 cm long; umbels 2-or 3-flowered, 4 or 5 sessile to shortly pedunculate per scape; pedicels 2-2.5 cm long, articulated just below middle. Perianth segments 19 mm long. Sepals linear-lanceolate, 3 mm wide, mucronate. Petals elliptic, 6 mm wide; fimbriae 3-4 mm long. Stamens 6; anthers twisted, 3 outer 4 mm long, 3 inner 10 mm long and curved. Style 10 mm long. Seeds 1.5 mm long, 1 mm diam.; aril shortly stalked, straw-coloured.

Grows in Jarrah (Eucalyptus marginata ) low forest, in heavy clay soils, often inundated in winter.