Grevillea williamsonii
| Grevillea williamsonii | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Proteales |
| Family: | Proteaceae |
| Genus: | Grevillea |
| Species: | G. williamsonii
|
| Binomial name | |
| Grevillea williamsonii F.Muell.
| |
Grevillea williamsonii, also known as Williamson's Grevillea, is a shrub which is endemic to a restricted area in the Grampians Ranges in western Victoria. It was first described from a single plant in 1893, which was destroyed by bushfire four years later.[1] It was then feared extinct and went unrecorded until 1992, where 12 plants were found.[2] The taxonomic validity of this grevillea has been disputed, and many sources treat it as synonymous with G. aquifolium.[3][4]
Description
[edit]Grevillea williamsoni is a spreading shrub that grows 0.6–1 m tall. Leaves are elliptic to narrow, 1.5–4.0 cm long, 3–8 mm wide, entire or (occasionally on adults, commonly on juveniles) with 2–4 spreading triangular teeth; margins shortly and angularly refracted; lower surface subsericeous to subvillous with straight hairs. The perianth is lime-green becoming yellowish; style pale orange yellow becoming pale pink at about anthesis then darker reddish pink. Flowering occurs August-October.[3]
Taxonomy
[edit]Grevillea williamsonii was first described in 1893. It is named after its discoverer, H.B. Williamson.[1]
Many sources, including the National Herbarium of Victoria and the Australian Plant Census treat G. williamsonii as synononymous with G. aquifolium, with recent studies suggesting it is a sterile variant.[3][4]
Distribution and habitat
[edit]The species is known only from a single area in the Grampians Ranges in western Victoria.[3]
References
[edit]- ^ a b "Grevillea williamsonii". Australian Native Plants Society. Retrieved 18 June 2024.
- ^ Marriott, Neil. "Grevillea williamsonii; Clinging to Survival". Australian Plants Online. Retrieved 23 June 2024.
- ^ a b c d Makinson, R.O. "Grevillea williamsoni". Atlas of Living Australia. Retrieved 18 June 2024.
- ^ a b "Grevillea williamsonii (Williamson's Grevillea)". Australian Government Department of Climate Change, Energy, the Enviromment and Water. 6 June 2005. Retrieved 18 June 2024.