Senna curvistyla

Senna curvistyla is a spreading undershrub that typically grows to a height of and is softly-hairy apart from the petals and stamens. The leaves are pinnate, long on a petiole long with two or three pairs of narrowly elliptic to elliptic leaflets long, wide and spaced apart. The flowers are yellow and arranged in leaf axils in groups of two or three on a peduncle long, each flower on a pedicel about long. The petals are about long and there are ten fertile stamens, the anthers long. Flowering occurs from January to August, and the fruit is a flat pod long, about wide and straight. ==Taxonomy==

This species was first formally described in 1938 by John McConnell Black who gave it the name Cassia curvistyla in the Transactions of the Royal Society of South Australia from specimens collected near Yundamindera by John Burton Cleland in 1936. In 1989, Barbara Rae Randell reclassified the species as Senna curvistyla in the Journal of the Adelaide Botanic Garden. The specific epithet (curvistyla) means "curved style". ==Distribution and habitat==

Senna curvistyla grows in deep, red desert sand in inland northern Western Australia and the Northern Territory. ==References==