Perennial herb to 60 cm or so tall, the stems sometimes branched. Leaves linear to lanceolate, occasionally broad, to 3 cm long, 2-4 mm wide. Flower clusters of few to many flowers in a 1-sided terminal spike. Flowers with tube 5-8 mm long, the spreading lobes to 5 mm long, white to deep yellow; late winter to early summer. Fruit nutlets usually 3.
S. viminea Sm., Slender Stackhousia, from WA, the NT and E Australia is occasionally listed; it has flowers in clusters, each cluster with 3 or more bracts, and leaves 2-7 mm wide.
WA, SA, Qld, NSW, Vic, Tas.
Source: (2002). Stackhousiaceae. In: . Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.