| 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.
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]
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]
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]
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]
Grevillea dielsiana, commonly known as Diels grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a spreading shrub with divided leaves, the end lobes linear and tapering, and groups of red or orange flowers, often with streaks of pink or cream.
Grevillea candelabroides is a species of flowering plant in the family Proteaceae and is endemic to the west of Western Australia. It is a shrub with pinnately-divided leaves with linear lobes, and white or cream-coloured flowers.
Grevillea curviloba is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a prostrate to erect shrub with short branchlets, divided leaves with linear to narrowly lance-shaped lobes with the narrower end towards the base, and white to cream-coloured flowers.
Grevillea levis is a species of flowering plant in the family Proteaceae and is endemic to the west of Western Australia. It is a dense shrub with divided leaves, the end lobes linear and sharply pointed, and clusters of white to cream-coloured flowers, sometimes flushed with pink.
Grevillea involucrata, also known as Lake Varley grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an openly-branched, prostrate or low-lying shrub with divided leaves with parallel, oblong to linear lobes, and pink flowers with a pinkish-red style.
Grevillea candicans is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a bushy shrub with pinnately-divided leaves with sharply-pointed linear lobes, and cream-coloured flowers.
Grevillea annulifera, also known as prickly plume grevillea, is a species of flowering plant in the family Proteaceae and is endemic to northern Western Australia. It is a spreading to erect shrub with pinnatisect leaves with five to nine sharply-pointed, linear lobes, and cream-coloured to pale yellow flowers.
Grevillea centristigma is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a low, compact to erect, rounded or spreading shrub with softly-hairy narrowly elliptic to egg-shaped leaves with the narrower end towards the base, and deep yellow to orange flowers with a yellow, later brick-red style.
Grevillea christineae, commonly known as Christine's grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect, rounded shrub with wiry branches, linear to narrowly elliptic leaves, and white flowers.
Grevillea leucoclada is a species of flowering plant in the family Proteaceae and is endemic to a small area in the west of Western Australia. It is a shrub with divided leaves, the lobes further divided, the end lobes linear or tapered, and cone-shaped clusters of white to cream-coloured flowers.
Grevillea brachystachya, commonly known as short-spiked grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a bushy shrub with linear leaves and more or less spherical clusters of cream-coloured to greenish flowers.
Grevillea coccinea is a species of flowering plant in the family Proteaceae and is endemic to the south of Western Australia. It is a low-lying or sprawling shrub with narrowly wedge-shaped to linear leaves and white, cream-coloured, and red or yellow flowers.
Grevillea crowleyae is a species of flowering plant in the family Proteaceae and is endemic to a restricted area in the south-west of Western Australia. It is a dense, spreading shrub with deeply divided leaves usually with three to seven linear lobes, and grey, pale yellowish or greenish flowers with a maroon-black style.
Grevillea fuscolutea is a species of flowering plant in the family Proteaceae and is endemic to a small area in the south-west of Western Australia. It is an erect shrub with egg-shaped to more or less linear leaves, and dull yellow-orange flowers.
Grevillea haplantha is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a dense, rounded shrub with linear leaves and clusters of pink to red flowers with white or brown hairs, depending on subspecies.
Grevillea hislopii is a species of flowering plant in the family Proteaceae and is endemic to a restricted area of the south-west of Western Australia. It is a dense, single-stemmed shrub with linear to narrow elliptic leaves and clusters of hairy, whitish-grey flowers.
Grevillea nivea is a species of flowering plant in the family Proteaceae and is endemic to the south of Western Australia. It is a dense shrub with spreading to ascending branches, crowded, divided leaves, the end lobes linear, and dense clusters of red flowers.
Grevillea prominens is a species of flowering plant in the family Proteaceae and is endemic to a restricted part of the South West region of Western Australia. It is a shrub with divided leaves, the end-lobes linear to narrow triangular, and creamy-white flowers usually projected beyond the foliage.
Grevillea pythara, commonly known as Pythara grevillea, is a species of flowering plant in the family Proteaceae and is endemic to a restricted part of the South West region of Western Australia. It is a low, suckering shrub with linear to narrowly elliptic leaves and small groups of red flowers.
Grevillea rara, also known as the rare grevillea, is a species of flowering plant in the family Proteaceae and is endemic to a restricted part of the South West region of Western Australia. It is a prostrate, sprawling shrub when young, later a dense, prickly shrub with pinnatisect leaves with linear lobes, and clusters of white to pale pink flowers.
