Stachystemon virgatus

Stachystemon virgatus is a species of flowering plant in the family Picrodendraceae and is endemic to the southwest of Western Australia. It is a compact monoecious shrub with elliptic or narrowly oblong leaves and small yellow flowers arranged singly in upper leaf axils.

Description
Stachystemon virgatus is a compact, monoecious shrub that typically grows to a height of up to 40 cm and has smooth, glabrous branchlets. Its leaves are well-spaced along the stems and branchlets, elliptic or narrowly oblong, 1.9–9.7 mm long and 1.3–3.1 mm wide on a petiole 0.4–0.8 mm, with tapering stipules 0.9–1.6 mm long at the base. The flowers are arranged singly in upper leaf axils with narrowly triangular, glabrous bracts 0.2–0.4 mm long and one or two similar, but smaller bracteoles at the base. Male flowers are on a stout pedicel 1.5–3 mm long with usually 4 egg-shaped, yellow tepals, 1.1–1.8 mm long and 0.8–1.1 mm wide. There are mostly 10 to 14 stamens, the anthers yellow. Female flowers are sessile or on a pedicel up to 0.8 mm long and usually have 4 narrowly egg-shaped, greenish-yellow tepals 1.0–1.8 mm long and 0.3–0.6 mm wide. Flowering has been observed from September to November, and the fruit is an elliptical or oval capsule 4.5–6.0 mm long.

Taxonomy
This species was first formall described was first formally described in 1848 by Johann Friedrich Klotzsch, who gave it the name Chrysostemon virgatus in Lehmann's Plantae Preissianae near York in 1839. In 2003, David Halford and Rodney Henderson transferred the species to the genus Stachystemon as S. virgatus in the journal Austrobaileya. The specific epithet (virgatus) means "having long, slender branches".

Distribution and habitat
Stachystemon virgatus along the coast of Western Australia between the Stirling Range and Esperance and between Busselton, Bunbury and near York. It grows in mallee heath, in woodland, heath on sandplain, in rocky crevices and in swampy areas.