Isopogon pruinosus | |
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Isopogon pruinosus subsp. glabellus | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Order: | Proteales |
Family: | Proteaceae |
Genus: | Isopogon |
Species: | I. pruinosus |
Binomial name | |
Isopogon pruinosus | |
Occurrence data from Australasian Virtual Herbarium | |
Synonyms [1] | |
Isopogon sp. 'Watheroo' (D.Foreman 477) auct. non WA Herbarium Contents |
Isopogon pruinosus is a species of flowering plant in the family Proteaceae and is endemic to southwestern Western Australia. It is a compact, spreading shrub with narrow egg-shaped leaves with the narrower end towards the base and spherical to elliptic heads of pink flowers.
Isopogon pruinosus is a shrub that typically grows to about 2 m (6 ft 7 in) high and wide, with more or less glabrous, brownish branchlets. The leaves are glaucous, arranged alternately along the branchlets, and have smooth edges. The leaves are narrow egg-shaped with the narrower end towards the base, 30–85 mm (1.2–3.3 in) long and 6–20 mm (0.24–0.79 in) wide, tapering to a petiole that expands towards its base. The flowers are arranged in sessile, spherical to elliptic heads of sixteen to thirty-two flowers, the heads 15–25 mm (0.59–0.98 in) in diameter with three to four whorls of broadly egg-shaped involucral bracts at the base. The flowers are red or pink and hairy, the hairs pressed against the surface. The fruit is a hairy nut about 3.5 mm (0.14 in) long, fused with others in a spherical head 8–12 mm (0.31–0.47 in) long in diameter. [2]
Isopogon pruinosus was first formally described in 2010 by the botanists Michael Hislop and Barbara Rye in the journal Nuytsia . [2] [3] In the same journal, Hislop and Rye described two subspecies and the names are accepted at the Australian Plant Census.
The specific epithet (pruinosus) means "frosted or covered with hoar frost", and refers to the white coating that is usually present on this species. The subspecies epithet glabellus means "without hairs" and refers to the almost glabrous involucral bracts of that subspecies. [2]
Both subspecies of Isopogon pruinosus grow in heath or mallee woodland in the Avon Wheatbelt, Esperance Plains and Mallee biogeographic regions. Subspecies glabellus occurs from Corrigin to north of Hyden and subspecies pruinosus from south-west of Hyden to Frank Hann National Park with a disjunct population in the Fitzgerald River National Park. [2] [5] [7]
Both subspecies of I. pruinosus are classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife. [7] [8]
Isopogon, commonly known as conesticks, conebushes or coneflowers, is a genus of about forty species of flowering plants in the family Proteaceae, and are endemic to Australia. They are shrubs with rigid leaves, bisexual flowers in a dense spike or "cone" and the fruit is a small, hairy nut.
Banksia meisneri, commonly known as Meisner's banksia, is a shrub that is endemic to a small area in the south-west of Western Australia. It has crowded, more or less linear leaves and in winter and spring, spikes of golden brown flowers followed by furry fruit which usually only open after fire.
Isopogon cuneatus, commonly known as coneflower, is a species of plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a shrub with oblong to egg-shaped leaves with the narrower end towards the base, and flattened-spherical heads of glabrous pale to purplish pink flowers.
Banksia rufa is a species of prostrate shrub that is endemic to the south-west of Western Australia. It has broadly linear, pinnatifid or pinnatipartite leaves with between five and twenty lobes on each side, yellow, orange or brownish flowers in heads of forty or more, and glabrous, egg-shaped follicles.
Banksia hirta is a species of shrub that is endemic to Western Australia. It has hairy stems, deeply serrated leaves, pale yellow flowers in heads of about one hundred and shining follicles. It is restricted to the Stirling Range National Park.
Banksia squarrosa, commonly known as pingle, is a species of prickly shrub that is endemic to Western Australia. It has linear to narrow lance-shaped leaves with up to ten sharply-pointed teeth on each side, yellow flowers in heads of about sixty and later, up to seven oblong to egg-shaped follicles in each head.
Isopogon dubius, commonly known as pincushion coneflower, is a species of plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a shrub with sharply-pointed, deeply lobed or pinnate leaves and more or less spherical heads of pink to reddish pink flowers.
Isopogon adenanthoides, commonly known as the spider coneflower, is a plant in the family Proteaceae and is endemic to the southwest of Western Australia. It is an erect shrub with sharply-pointed, trifid leaves and spherical heads of pink flowers.
Isopogon asper is a species of plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a low shrub with crowded pinnate leaves and flattened spherical heads of glabrous pink flowers.
Isopogon alcicornis, commonly known as the elkhorn coneflower, is a plant in the family Proteaceae and is endemic to part of the south coast of Western Australia. It is a low shrub with pinnately-lobed leaves and oval heads of hairy, white or pink flowers.
Isopogon attenuatus is a species of plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a shrub with oblong to spatula-shaped or linear leaves and spherical heads of yellow flowers.
Isopogon axillaris is a species of plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a shrub with thick, linear to lance-shaped leaves with the narrower end towards the base and oval heads of pink or purple flowers.
Isopogon baxteri, commonly known as the Stirling Range coneflower, is a species of plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect shrub with wedge-shaped, often 3-lobed, toothed leaves and flattened spherical heads of hairy pink flowers.
Isopogon divergens, commonly known as spreading coneflower, is a species of plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a shrub with pinnate leaves and more or less spherical heads of glabrous pink flowers followed by an oval to cylindrical fruiting cone.
Isopogon polycephalus, commonly known as clustered coneflower, is a species of plant in the family Proteaceae and is endemic to the south coast of Western Australia. It is a spreading shrub with linear to lance-shaped leaves with the narrower end towards the base, and clusters of more or less spherical heads of white, cream-coloured or yellow flowers.
Isopogon crithmifolius is a species of plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a shrub with divided leaves and more or less spherical heads of glabrous reddish pink flowers.
Isopogon scabriusculus is a species of flowering plant in the family Proteaceae and is endemic to southwestern Western Australia. It is a shrub with cylindrical, or narrow flat, sometimes forked leaves, and spherical to oval heads of pink or red flowers.
Isopogon gardneri is a plant in the family Proteaceae and is endemic to the southwest of Western Australia. It is a dense, prickly shrub with sharply-pointed, interlocking leaves and hairy, pale pink or yellow flowers.
Isopogon heterophyllus is a plant in the family Proteaceae and is endemic to the southwest of Western Australia. It is a shrub with simple or pinnate, cylindrical leaves and hairy, usually pink flowers.
Isopogon panduratus is a plant in the family Proteaceae and is endemic to the southwest of Western Australia. It is a spreading shrub with narrow egg-shaped leaves and spherical heads of pale pink flowers.