Biology: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
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
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
The species is known only from a single area in the Grampians Ranges in western Victoria.[3]
References
- ↑ 1.0 1.1 "Grevillea williamsonii". https://anpsa.org.au/plant_profiles/grevillea-williamsonii/.
- ↑ Marriott, Neil. "Grevillea williamsonii; Clinging to Survival". https://anpsa.org.au/APOL2/jun96-4.html.
- ↑ 3.0 3.1 3.2 3.3 Makinson, R.O.. "Grevillea williamsoni". https://profiles.ala.org.au/opus/foa/profile/Grevillea%20williamsonii.
- ↑ 4.0 4.1 "Grevillea williamsonii (Williamson's Grevillea)". 6 June 2005. https://www.dcceew.gov.au/environment/biodiversity/threatened/assessments/grevillea-williamsonii-2005.
Wikidata ☰ Q5608034 entry
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