Calothamnus roseus

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Calothamnus roseus is a flowering plant in the myrtle family (Myrtaceae) that grows only in the southwest of Western Australia.

Description
- It is a shrub about 2.5 meters tall.
- Leaves are needle-like, 25–45 mm long and 0.5–0.7 mm wide, circular in cross-section and sharp at the tip.
- The flowers have four sepals and four petals. The flower cup and sepals are hairy.
- The stamens are deep pink and arranged in four bundles about 28–33 mm long.
- Petals are 6–7 mm long.
- Flowering occurs from September to November.
- After flowering, it produces smooth, woody capsules about 13–16 mm long.

Taxonomy and naming
- Calothamnus roseus was first formally described in 2010 by Alex George, based on a specimen near Ravensthorpe.
- The name roseus refers to the rosy-pink color of the stamens.
- In 2014, Craven, Edwards, and Cowley suggested renaming it Melaleuca rosea.

Distribution and habitat
- This plant occurs near Ravensthorpe in the Esperance Plains biogeographic region.
- It grows in rocky soil derived from quartzite.

Conservation
- Calothamnus roseus is listed as Priority One in Western Australia, meaning it is known from only a few locations and may be at risk.