Wongan melaleuca | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Myrtales |
Family: | Myrtaceae |
Genus: | Melaleuca |
Species: | M. sciotostyla |
Binomial name | |
Melaleuca sciotostyla Barlow [1] | |
Melaleuca sciotostyla, commonly known as Wongan melaleuca, is a plant in the myrtle family, Myrtaceae, and is endemic to the south-west of Western Australia. It is an endangered species with only 476 mature plants known in 2001. It is closely related and very similar to Melaleuca haplantha but has narrower leaves and fewer stamens per flower than that species.
Melaleuca sciotostyla is a shrub to about 1.5 m (5 ft) tall. Its leaves are arranged in alternating pairs, each pair at right angles to the ones above and below (decussate) so that the leaves form four rows along the stems. Each leaf is 6–12.5 mm (0.2–0.5 in) long and 0.8–2.2 mm (0.03–0.09 in) wide, linear to narrow elliptic in shape, slightly fleshy and with the end tapering to a point. [2]
The flowers are cream to white and arranged in small heads on the ends of branches which continue to grow after flowering and sometimes in the upper leaf axils. Each head is up to 17 mm (0.7 in) in diameter and contains up to four individual flowers. The stamens are arranged in five bundles around the flowers and there are 12 to 17 stamens per bundle. The main flowering period is in early spring and is followed by the fruit which are papery or corky, barrel-shaped capsules 5–5.5 mm (0.20–0.22 in) long. [2] [3] [4]
Melaleuca sciotostyla was first formally described in 1988 by Bryan Barlow in Australian Systematic Botany [5] as a new species. [1] The specific epithet (sciotostyla) is from the Ancient Greek skiotos meaning "shaded by gradation in colour" [6] referring to the coloration of the end of the style which appears to have been dyed. [2]
Melaleuca sciotostyla is confined to the Cadoux, Wongan Hills and Meckering districts [2] in the Avon Wheatbelt and Jarrah Forest biogeographic regions [4] [7] growing in clayey sand and laterite on scree slopes. [8]
Melaleuca sciotostyla is listed as "endangered" by the Australian Government Department of the Environment. [9] It is classed as "Declared Rare and Priority Flora" by the Government of Western Australia Department of Parks and Wildlife [8] meaning that it is likely to become extinct or rare and therefore in need of special protection. [10]
Melaleuca penicula is a plant in the myrtle family, Myrtaceae and is endemic to the south of Western Australia. It is a rare species only known from the Fitzgerald River National Park and resembles Melaleuca eximia with its spikes of red flowers but its leaves and stamen bundles are different.
Melaleuca barlowii is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is similar to a number of other Western Australian melaleucas such as M. conothamnoides with its purple pom-pom flower heads but is a more erect shrub with different leaves and the fruiting clusters have a different shape.
Melaleuca boeophylla is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is similar to a number of other Western Australian melaleucas such as M. filifolia with its purple pom-pom flower heads but its leaves are shorter and oval in cross-section.
Melaleuca eximia is a plant in the myrtle family, Myrtaceae and is endemic to the south of Western Australia. It is distinguished by its leaf arrangement, its large, showy red inflorescences and the large, furry bracts under the flowers.
Melaleuca grieveana is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is similar to Melaleuca brophyi with its heads of yellow flowers and almost cylindrical leaves. The main difference is that the leaves of this species, but not those of Melaleuca brophyi are covered with soft hairs.
Melaleuca orbicularis is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is similar to Melaleuca cordata with its pinkish "pom-pom" heads of flowers but its leaves are smaller, almost circular compared to the heart shaped leaves of the other species.
Melaleuca wonganensis is an erect shrub in the myrtle family Myrtaceae and is endemic to the south-west of Western Australia. It is a shrub with narrow leaves and purple to deep mauve flowers and is restricted in its distribution to the Wongan Hills district.
Melaleuca strobophylla is a shrub or small tree in the myrtle family Myrtaceae and is endemic to the south-west of Western Australia. It has papery bark, sharply pointed, twisted leaves and rather long spikes of creamy white flowers in summer.
Melaleuca apostiba is a shrub in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It was first described in 1990 by Kirsten Cowley and remains a poorly known species. It resembles Melaleuca lateritia except for its hairy leaves and flower structures as well as its leaf shape and size.
Melaleuca lecanantha is a plant in the myrtle family, Myrtaceae and is endemic to a small area of south-west Western Australia. It is a shrub with small, rather fleshy leaves and pink to lilac-coloured flowers in early spring. The plant was first described in 1867 but the name given to it was considered illegitimate and it was not until 1998 that it was first formally described.
Melaleuca ctenoides is a shrub in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It was first described in 1990 in a review of the genus Melaleuca when the species M. laxiflora at that time was found to comprise ten species. Two of those species were new - M. camptoclada and M. ctenoides. It similar to Melaleuca laxiflora but distinguished from it by its comb-like leaves and attractive mauve or violet flowers in spring.
Melaleuca haplantha is a shrub in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It was first described as a new species in 1988 when Bryan Barlow undertook a review of Melaleuca cuticularis and found it to include 13 separate species.
Melaleuca ordinifolia is a plant in the myrtle family, Myrtaceae, and is endemic to the south-west of Western Australia. It is closely related to Melaleuca brevifolia, but is smaller and differing mainly in its leaf features.
Melaleuca pritzelii is a plant in the myrtle family, Myrtaceae, and is endemic to the south-west of Western Australia. It was originally named in 1923 by Karel Domin as a subspecies Melaleuca densa var. pritzelii but raised to species status in 1992. It is a rare species, known only from a few plants in each of a small number of populations.
Melaleuca ringens is a plant in the myrtle family, Myrtaceae, and is endemic to the south-west of Western Australia. It shares some features with Melaleuca diosmifolia but has creamy yellow flower spikes and a lower, more spreading form.
Melaleuca sclerophylla is a plant in the myrtle family, Myrtaceae, and is endemic to the south-west of Western Australia. It is distinguished by its unusual leaves which are rough, leathery and covered with small, warty lumps and by its many purple heads of flowers in early spring.
Melaleuca sculponeata is a plant in the myrtle family, Myrtaceae, and is endemic to the south-west of Western Australia. It is a small, rare shrub with fleshy leaves and white heads of flowers.
Melaleuca subalaris is a plant in the myrtle family, Myrtaceae, and is endemic to the south of Western Australia. It is distinguished by its small, decussate leaves and small flower heads which rarely have more than one flower in each inflorescence.
Melaleuca teuthidoides is a plant in the myrtle family, Myrtaceae and is endemic to the south of Western Australia. It is a shrub with rough bark and heads of white flowers on the ends of its branches in spring and early summer.
Melaleuca torquata is a plant in the myrtle family, Myrtaceae and is endemic to the south of Western Australia. It is a prickly shrub whose leaves have a distinct mid-vein on the lower surface and which has heads of pinkish white flowerheads in early spring.