Petalostylis cassioides E.Pritz.

Shrub to 3 m tall; stems sometimes decumbent; branchlets glabrous to densely clothed with spreading, white hairs, sometimes pruinose. Leaves: stipules narrowly to broadly ovate or subcordate, sometimes obliquely so, 3-5 mm long, 1.2-3 mm wide, often persisting; rachis 1.5-14 cm long, sparsely appressed pubescent to densely clothed with spreading hairs, often rigid, almost spinescent and persisting after the leaflets have fallen; leaflets mostly 11-80, usually obovate, obovate-oblong or obcordate, 2-18 mm long, 1.3-8 mm wide, rounded or obtuse apically and emarginate, retuse or shortly mucronate, glabrous to densely pubescent above and below. Sepals 10-16 mm long, usually sparingly to densely clothed with appressed to spreading, white, ferruginous or black hairs, sometimes short, uncinate hairs also present. Petals 1.5-2.2 cm long, 0.7-1.6 cm wide. Pod 2.3-3 cm long, 0.7-0.9 cm wide; margins usually with spreading and uncinate hairs.

It grows in arid and semi-arid regions in Australia. They are on gravelly and sandy soils. The soils need good drainage. They can tolerate frost.

Plants are grown from seed or cuttings.