Grevillea costata
| Grevillea costata | |
|---|---|
| |
| In the Hunter Region Botanic Gardens | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Proteales |
| Family: | Proteaceae |
| Genus: | Grevillea |
| Species: | G. costata
|
| Binomial name | |
| Grevillea costata | |
Grevillea costata is a species of flowering plant in the family Proteaceae and is endemic to the west of Western Australia. It is a spreading shrub with sharply-pointed, linear leaves and white flowers.
Description
[edit]Grevillea costata is a spreading shrub that typically grows to a height of 0.8–1.5 m (2 ft 7 in – 4 ft 11 in) and has many ridged, silky-hairy branchlets. Its leaves are linear, 15–45 mm (0.59–1.77 in) long and 0.8–1.3 mm (0.031–0.051 in) wide with the edges rolled under, enclosing all but the mid-vein. The flowers are arranged in groups of four to ten in leaf axils or on the ends of branchlets and are white, the pistil 7.0–9.5 mm (0.28–0.37 in) long with a white to cream-coloured, sometimes pink style. Flowering occurs from May to September and the fruit is an elliptic to oblong follicle 9.5–11 mm (0.37–0.43 in) long with prominent ridges.[3][4][5]
Taxonomy
[edit]Grevillea costata was first formally described in 1974 by Alex George in the journal Nuytsia from specimens collected by Charles Gardner near rocks in the Murchison River in 1931.[5][6] The specific epithet (costata) means "ribbed", referring to the fruit.[5][7]
Distribution and habitat
[edit]This grevillea grows in sand and among rocks in the river bed of the Murchison River in the Carnarvon, Geraldton Sandplains and Yalgoo biogeographic region of Western Australia.[3][4]
Conservation status
[edit]Grevillea costata is listed as Least Concern on the IUCN Red List of Threatened Species. Although its estimated extent of occurrence is relatively small at 6000km², its population is stable and faces no known major threats. Most of this species' range occurs in the protected area of Kalbarri National Park.[1]
It is also listed as "Priority Three" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[4] meaning that it is poorly known and known from only a few locations but is not under imminent threat.[8]
See also
[edit]References
[edit]- ^ a b Monks, L.; Keighery, G. (2020). "Grevillea costata". IUCN Red List of Threatened Species. 2020: e.T112650868A113307826. doi:10.2305/IUCN.UK.2020-2.RLTS.T112650868A113307826.en. Retrieved 28 December 2023.
- ^ "Grevillea costata". Australian Plant Census. Retrieved 8 March 2022.
- ^ a b "Grevillea costata". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 9 March 2022.
- ^ a b c "Grevillea costata". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ a b c George, Alex S. (1974). "Seven new species of Grevillea (Proteaceae) from Western Australia". Nuytsia. 1 (4): 370–371. Retrieved 9 March 2022.
- ^ "Grevillea costata". APNI. Retrieved 9 March 2022.
- ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 171. ISBN 9780958034180.
- ^ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 9 March 2022.