Grevillea evanescens | |
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In Mount Coot-tha Botanic Gardens | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Order: | Proteales |
Family: | Proteaceae |
Genus: | Grevillea |
Species: | G. evanescens |
Binomial name | |
Grevillea evanescens | |
Grevillea evanescens is an endangered species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect to spreading shrub with oblong to elliptic leaves and clusters of pale to bright red and cream-coloured flowers.
Grevillea evanescens is an erect to spreading shrub that typically grows to a height of 2–3.5 m (6 ft 7 in – 11 ft 6 in). The leaves are oblong to egg-shaped with the narrower end towards the base, or elliptic, 20–45 mm (0.79–1.77 in) long and 2.5–9 mm (0.098–0.354 in) wide. The upper surface of the leaves is more or less glabrous and the lower surface of young leaves is silky-hairy. The flowers are arranged in downcurved clusters of eight to twelve flowers on a rachis 7–15 mm (0.28–0.59 in) long. The flowers are pale to bright red and cream-coloured with a red, green tipped style, the pistil 26–27 mm (1.0–1.1 in) long. Flowering occurs in winter and spring and the fruit is an oblong follicle 10–11 mm (0.39–0.43 in) long. [4] [2]
Grevillea evanescens was first formally described in 1994 by Peter M. Olde and Neil R. Marriott in The Grevillea Book from specimens collected by Olde near Gingin in 1991. [5] The specific epithet (evanescens) means "disappearing", referring to the hairs on the lower leaf surface. [6]
This grevillea grows in sandy soil in Banksia woodland near Gingin, in the Swan Coastal Plain biogeographic region of south-western Western Australia. [4] [2]
Grevillea evanescens is listed as Endangered on the IUCN Red List of Threatened Species [1] and as "Priority One" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions, [2] meaning that it is known from only one or a few locations which are potentially at risk. [7]
The species has a severely fragmented range due to habitat clearance for agriculture, housing and road development. It an estimated extent of occurrence of 654km². Both its population and the quality of its habitat are in decline. As it is mainly found along road verges, it is threatened by weed invasion and verge clearance. It is unknown if this species is susceptible to die-back disease caused by the plant pathogen Phytophtora. [1]
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 thelemanniana, commonly known as spider net grevillea, is species of flowering plant in the family Proteaceae and is endemic to Perth, Western Australia. It is a spreading shrub with linear and pinnatipartite to pinnatisect leaves with linear to narrowly elliptic lobes, and clusters of 6 to 14 pinkish-red and cream-coloured flowers with a red, green-tipped style.
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 drummondii, commonly known as Drummond's grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a low, spreading to erect shrub with narrowly elliptic to narrowly egg-shaped leaves with the narrower end towards the base, and dense groups of cream-coloured flowers that turn pink or red as they age.
Grevillea corrugata 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 shrub with deeply divided leaves usually with three to five sharply-pointed, linear lobes, and white to cream-coloured flowers.
Grevillea didymobotrya is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect shrub with simple leaves, the size and shape depending on subspecies, and cylindrical groups of yellow or cream-coloured flowers.
Grevillea guthrieana, commonly known as Guthrie's grevillea, is a species of flowering plant in the family Proteaceae and is endemic to New South Wales. It is a spreading shrub with oblong leaves and clusters of 2–6 green and maroon flowers.
Grevillea diversifolia, the variable-leaved 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 to prostrate shrub with simple or divided leaves and groups white to cream-coloured flowers with a dull red style.
Grevillea aspera, commonly known as the rough grevillea, is a species of flowering plant in the family Proteaceae and is endemic to Australia, occurring mainly in South Australia. It is low, spreading to erect shrub with oblong to egg-shaped leaves with the narrower end towards the base, and pinkish to red and cream-coloured, green, yellow or white flowers.
Grevillea exposita is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a dense, spreading shrub with mostly oblong to narrowly elliptic leaves and clusters of bright red and white flowers.
Grevillea glabrescens is a species of flowering plant in the family Proteaceae and is endemic to the Northern Territory. It is an open, erect shrub with oblong leaves that have triangular teeth or lobes on the edges, and clusters of white to cream-coloured or very pale yellow flowers.
Grevillea anethifolia, commonly known as spiny cream spider flower, is a species of flowering plant in the family Proteaceae and is endemic to continental Australia. It is an erect shrub with hairy branchlets, lobed leaves, the lobes sharply pointed, and white to pale yellow or cream-coloured flowers.
Grevillea amplexans is a species of flowering plant in the family Proteaceae and is endemic to the Mid West region of Western Australia. It is a spreading shrub with arching branches, stem-clasping, sharply-pointed, lobed or toothed leaves and white to cream-coloured flowers.
Grevillea erinacea 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 deeply-divided leaves with three to five linear lobes, rotated through 90°, and cream-coloured flowers with a white style.
Grevillea eryngioides, commonly called curly grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is shrub with low clumping foliage with erect flowering spikes, divided leaves with oblong to egg-shaped lobes, and groups of purplish-red flowers with a yellow style.
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 hirtella 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 crowded linear and divided leaves and clusters of pale pink to deep red flowers.
Grevillea xiphoidea is species of flowering plant in the family Proteaceae and is endemic to a restricted part of inland areas of Western Australia. It is a dense shrub with divided leaves, the end lobes linear and sharply-pointed, and loose clusters of white to cream-coloured flowers.
Grevillea goodii, also known as Good's grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the Northern Territory. It is a prostrate shrub with egg-shaped to narrowly elliptic leaves and clusters of light green flowers with a pink to red style.
Grevillea angulata is a species of flowering plant in the family Proteaceae and is endemic to the Top End of the Northern Territory. It is a spreading to erect shrub with pinnatifid or toothed leaves and cream-coloured flowers.