Melaleuca calyptroides | |
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In Watheroo National Park | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Myrtales |
Family: | Myrtaceae |
Genus: | Melaleuca |
Species: | M. calyptroides |
Binomial name | |
Melaleuca calyptroides | |
Melaleuca calyptroides 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. hollidayi with its almost cylindrical leaves, purple pom-pom flower heads and low growth habit but it has longer, wartier leaves and fewer flowers in the inflorescences. The floral cup and woody capsule from which it develops are longer than those of similar melaleucas.
Melaleuca calyptroides is a small, low growing shrub sometimes reaching a height of 1.5 m (5 ft). Its leaves are arranged alternately, linear in shape, almost circular in cross-section, 5.5–28 mm (0.2–1 in) long, 0.7–1.7 mm (0.03–0.07 in) wide with a leaf stalk the same width as the leaf blade. Most of the leaves are densely covered with distinct, raised oil glands. [1]
The flowers are a shade of pink to purple and appear singly or in small heads on the ends of branches which continue to grow after flowering, sometimes also in the upper leaf axils. The heads are up to 30 mm (1 in) in diameter and contain 1 or 2 groups of flowers in threes, sometimes up to 9 individual flowers. The petals are 2–5.5 mm (0.08–0.2 in) long, and fall off the flower as it opens. The stamens are arranged in bundles of five around the flower, usually with 8 to 15 stamens in each bundle. The flowering season extends from July to November and is followed by fruit which are woody capsules, 3.5–6 mm (0.1–0.2 in) long. [1] [2]
Melaleuca calyptroides was first formally described in 1999 by Lyndley Craven and Brendan Lepschi in Australian Systematic Botany from a specimen found 94 km (60 mi) east of Southern Cross. [3] [4] The specific epithet (calyptroides) is from the Ancient Greek word kalypto meaning "cover" or "conceal", hence "calyptra". [1] The ending -oides is a Latin suffix meaning "resembling" or "having the form of". [5]
This melaleuca occurs in and between the Watheroo, Morawa, Merredin, Hyden and Coolgardie districts [1] in the Avon Wheatbelt, Coolgardie, Geraldton Sandplains, Mallee and Yalgoo biogeographic regions. It grows in heath, scrub and shrubland in clayey sand or loam over laterite. [6]
Melaleuca calyptroides is listed as "not threatened" by the Government of Western Australia Department of Parks and Wildlife. [6]
Melaleuca amydra is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is similar to Melaleuca ryeae with its small, compact form, oval leaves and "pom-pom" heads of pink to purple flower heads on the ends of the branches in spring.
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 beardii 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. trichophylla with its purple pom-pom flower heads but unlike others, the tips of its leaves are rounded rather than pointed.
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 borealis is a plant in the myrtle family, Myrtaceae and is endemic to areas in the tropical north of Queensland. It has relatively long, thin, cylinder-shaped leaves and heads of white to pale yellow flowers on the ends of its branches in late spring.
Melaleuca caeca 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. pentagona with its purple pom-pom flower heads but it is a smaller shrub with narrower leaves and smaller inflorescences.
Melaleuca campanae is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a small, woody shrub similar to Melaleuca eulobata, with a low, spreading habit and pinkish flower heads but it has longer, pointed leaves and lacks distinct sepals which instead form a ring of tissue around the edge of the flowers.
Melaleuca carrii is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a small shrub similar to Melaleuca pentagona, with "pom-pom" heads of pinkish flowers and sharply pointed leaves but it is generally smaller, lacks a groove in its leaves and retains its petals on the flowers for longer than that species.
Melaleuca clavifolia is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a small shrub similar to Melaleuca tinkeri, with "pom-pom" heads of pinkish flowers and soft, silky hairs on the new growth but it has larger flower heads and its leaves are shorter, more club-shaped and have less distinct oil glands.
Melaleuca eulobata is a plant in the myrtle family, Myrtaceae and is endemic to the west coast of Western Australia. It is a shrub resembling Melaleuca campanae with its heads of pink flowers in late spring but is distinguished from that species by its sepals - in M. campane these are reduced to a ring of tissue but M. eulobata has distinct calyx lobes.
Melaleuca johnsonii is a plant in the myrtle family, Myrtaceae and is endemic to the south of Western Australia. It is similar to Melaleuca thapsina with its cylindrical leaves with prickly tips and usually yellow heads of flowers but is distinguished from it by its shorter leaves and papery sepals.
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 phoidophylla is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is distinguished by its leaf arrangement, small raised blisters on the leaves and heads of white or cream flowers on the ends of the branches in spring.
Melaleuca sapientes is a plant in the myrtle family, Myrtaceae, endemic to the south-west of Western Australia. It is a small shrub with silky grey leaves and small heads of pinkish flowers in spring or early summer. The attractive, silvery foliage has made this melaleuca a popular garden plant under the incorrect name of Melaleuca holosericea, a similar but much rarer species.
Melaleuca societatis is a plant in the myrtle family, Myrtaceae and is endemic to the south west of Western Australia. It is a dwarf shrub with small, fleshy leaves and many heads of pink or purple flowers in spring, followed by "soccer-ball" fruit.
Melaleuca stramentosa is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a small, bushy shrub similar to Melaleuca similis with its cylindrical leaves and heads of pink to purple flowers but differs in have matted, woolly hairs around the flowers and on the young leaves.
Melaleuca systena, commonly known as coastal honeymyrtle is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It was previously known as Melaleuca acerosa. It is a small shrub with crowded foliage and profuse heads of white to yellow flowers on the ends of its branches in spring.
Melaleuca thapsina is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a prickly shrub with fibrous or papery bark, yellow to cream coloured flowers and tightly packed cylinders of fruiting capsules.
Melaleuca zeteticorum is a shrub in the myrtle family Myrtaceae and is endemic to the south-west of Western Australia. It is a shrub with narrow leaves and pale to bright yellow flowers in spring. Its species name zeteticorum was given "in honour of these persons who for their enjoyment explore natural vegetation communities to become familiar with their constituent species".
Melaleuca acutifolia is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It has small, pointed, oval leaves and in summer, heads of white flowers. The species was originally described as a variety of Melaleuca lateriflora but was raised to species status in 2010.