Poranthera leiosperma
Halford & R.J.F.Hend.Compact annual herb to c. 10 cm high, glabrous, more or less glaucous. Leaves alternate or opposite, sessile, narrow-obovate, 11–15 mm long, 2–4 mm wide, obtuse, margins flat or slightly recurved; stipules entire, membranous, 1.3–1.6 mm long. Inflorescences compact racemes, to c. 1 cm across; rachis barely elongating after anthesis; bracts narorow-obovate, 4–5 mm long. Pedicels c. 1 mm long. Sepals 5, obovate, 0.7–0.8 mm long, white (usually males) or pink (usually female); petals 5, oblanceolate, c. 0.3 mm long. Male flowers with 5 stamens, filaments free; female flowers with 3 deeply 2-partite styles. Capsule 1.5–1.8 mm diam., 3-lobed; seeds wedge-shaped, 0.7–1.2 mm long, smooth, white. Flowers mostly Sep.–Nov.
LoM, MuM, RobP. Also WA, NT. Confined to sandy mallee areas of the north-west, with outlying populaitons observed in the Little Desert following fire.
Previously included in P. microphylla. Although known from only few collections, it is likely that the species is at least locally common following fire and/or good winter/spring rains.
Spinning