Senna circinnata

Senna circinnata is a shrub or small tree that typically grows to a height of up to , and is sparsely covered with soft hairs pressed against the surface. Its leaves are pinnate, long on a petiole long, with one to three pairs of egg-shaped leaflets with the narrower end towards the base, long and wide, the leaflets usually lost when the leaf matures. There is a single glands between the lower pair of leaflets. The flowers are yellow and arranged in upper leaf axils in small groups on a peduncle long, each flower on a pedicel long. The petals are about long and there are ten fertile stamens, the anthers long. Flowering occurs in most months with a peak in winter, and the fruit is a flattened, spirally coiled pod long and about wide. ==Taxonomy==

This species was first formally described in 1848 by George Bentham who gave it the name Cassia circinnata in Thomas Mitchell's Journal of an Expedition into the Interior of Tropical Australia. In 1998, Barbara Rae Randell and Bryan Alwyn Barlow transferred the species to Senna as Senna charlesiana in the Flora of Australia. The specific epithet (circinnata) means "curled around upon itself". ==Distribution and habitat==

Senna circinnata grows in arid shrubland in western Queensland and in western New South Wales. ==References==