Stenanthemum radiatum
From Wikipedia, the free encyclopedia
| Stenanthemum radiatum | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Rhamnaceae |
| Genus: | Stenanthemum |
| Species: | S. radiatum |
| Binomial name | |
| Stenanthemum radiatum | |
Stenanthemum radiatum is a species of flowering plant in the family Rhamnaceae and is endemic to a restricted part of the southwest of Western Australia. It is a spreading shrub with narrowly triangular or wedge-shaped to heart-shaped leaves and densely crowded, head-like clusters of white, densely hairy, tube-shaped flowers.
Stenanthemum radiatum is a spreading shrub that typically grows to a height of 10–30 cm (3.9–11.8 in), its young stems sparsely covered with white star-shaped and simple hairs. Its leaves are narrowly triangular to wedge-shaped or heart-shaped with the narrower end towards the base, 8–14 mm (0.31–0.55 in) long and 3–5 mm (0.12–0.20 in) wide on a petiole 1–2 mm (0.039–0.079 in) long, with broad, fused stipules 2–3 mm (0.079–0.118 in) long at the base. Most leaves have a deeply notched tip, the edges of the leaves is rolled under, and the lower surface is hairy. The flowers are white, densely hairy and borne in densely crowded, head-like clusters 5–8 mm (0.20–0.31 in) wide on the ends of branches. The clusters are surrounded by two or more radiating leaves, giving the clusters a daisy-like appearance. The floral tube is densely hairy, about 1 mm (0.039 in) long, the sepals densely hairy and about 1 mm (0.039 in) long and the petals about 0.6 mm (0.024 in) long. Flowering occurs from September to November, and the fruit is 1.8–2.0 mm (0.071–0.079 in) long and densely hairy.[2][3]
Taxonomy and naming
Stenanthemum radiatum was first formally described in 2007 by Barbara Lynette Rye in the journal Nuytsia from specimens collected in 1998 in the Burma Road Nature Reserve.[3][4] The specific epithet (radiatum) means "with spokes" or "radiating", referring to the arrangement of the leaves around the flower clusters.[3]