Taxonomy
- Kingdom: Plantae
- Clade: Angiosperms → Eudicots → Rosids
- Order: Proteales
- Family: Proteaceae
- Genus: Synaphea R.Br.
- Species: Synaphea spinulosa (Meisn.) [author citation commonly given as Synaphea spinulosa Meisn.]
Description
Synaphea spinulosa is a low, evergreen shrub that typically attains a height of 0.1–0.3 m. The plant possesses narrow, linear to narrowly lanceolate leaves that are often covered with minute, pointed (spinulose) teeth along the margins, giving rise to the specific epithet “spinulosa,” meaning “bearing small spines.” Stems are slender and may be somewhat pubescent.
The inflorescences are terminal or axillary spikes bearing numerous small, yellow to cream-colored flowers typical of many Proteaceae. Each flower consists of a perianth of four tepals and a prominent, beaked style. Flowering generally occurs in the austral winter to spring months (June to November), depending on local climatic conditions.
Distribution and Habitat
Synaphea spinulosa is endemic to the south‑west region of Western Australia. Its range includes the Wheatbelt and Goldfields‑Esperance botanical regions, occurring on sandy or gravelly soils derived from laterite and granite outcrops. The species is commonly found in heathland and low open shrubland communities, often co‑occurring with other Proteaceae members.
Ecology
The species is adapted to the nutrient‑poor, well‑drained soils of its native range. Like many Proteaceae, it forms a specialized root system called “proteoid roots” that enhances phosphorus uptake. Pollination is presumed to be primarily entomophilous, with native bees and other insects visiting the flowers for nectar and pollen.
Conservation Status
According to the Department of Biodiversity, Conservation and Attractions (Western Australia) and the Australian Government’s EPBC Act listings, Synaphea spinulosa is currently classified as “Not Threatened.” Populations are considered stable, although habitat alteration from agriculture and mining can pose localized pressures.
Etymology
The generic name Synaphea derives from Greek “syn‑” (together) and “aphein” (to bind), possibly referring to the fused nature of certain floral structures within the genus. The species epithet spinulosa is Latin for “small‑spined,” directly describing the marginal leaf teeth observed in this taxon.
References
- Australian Plant Census (APC). Synaphea spinulosa.
- Department of Biodiversity, Conservation and Attractions, Western Australia. FloraBase—the Western Australian Flora.
- Hopper, S.D.; Brown, A.S.; et al. (2010). “Proteaceae of Western Australia.” Journal of the Royal Society of Western Australia.
All information presented reflects currently available encyclopedic and botanical sources; no speculative statements have been made.
