Swainsona formosa

Swainsona formosa is a prostrate annual or short lived perennial herb, with several densely softly-hairy stems mostly 4–8 mm (0.16–0.31 in) wide. The leaves are mostly 100–150 mm (3.9–5.9 in) long with about 15 elliptic to egg-shaped leaflets 100–300 mm (3.9–11.8 in) long and 5–12 mm (0.20–0.47 in) wide, the end leaflet slightly longer. There are broad, densely hairy stipules, sometimes 15 mm (0.59 in) or more at the base of the petiole. The flowers are borne in racemes about 100–150 mm (3.9–5.9 in) long with 2 to 6 usually red flowers, sometimes white or other colours, on a peduncle 50–150 mm (2.0–5.9 in) long, each flower on a shaggy-hairy pedicel 5–20 mm (0.20–0.79 in) long. The sepals are joined at the base, forming a bell-shaped tube 5–6 mm (0.20–0.24 in) long with narrowly egg-shaped lobes with thread-like tips, the lobes twice as long as the tube. The standard petal is 40–60 mm (1.6–2.4 in) long and very narrow, the base domed into a usually black, shiny boss. The wings are 35–40 mm (1.4–1.6 in) long, tapering to a narrow point, and the keel 50–60 mm (2.0–2.4 in) long and 12–15 mm (0.47–0.59 in) deep with a narrow tip. …

Sturt's desert pea is widespread in arid parts of inland Australia, including in Western Australia, South Australia, the southern parts of the Northern Territory, western parts of New South Wales and in Queensland. It grows in red sandy or loamy soils in mulga woodland, near creek lines and on stony hills, sometimes in woodland and open plains.