Black-stemmed mallee | |
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Eucalyptus arachnaea near Walebing | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Myrtales |
Family: | Myrtaceae |
Genus: | Eucalyptus |
Species: | E. arachnaea |
Binomial name | |
Eucalyptus arachnaea | |
Synonyms [2] | |
Eucalyptus redunca var. melanophloia Benth. |
Eucalyptus arachnaea, commonly known as the black-stemmed mallee, [3] is a mallee or tree that is endemic to Western Australia. It has rough, stringy bark, lance-shaped leaves and white flowers in groups of up to thirteen.
Eucalyptus arachnaea is a mallee that grows to a height of 7.0 m (20 ft) or a tree to 10 m (30 ft). It has rough, stringy, dark grey to greyish black bark. Young plants have more or less triangular to broad, lance-shaped leaves 12 mm (0.5 in) long and 5 mm (0.2 in) wide. Adult leaves are lance-shaped, up to 90 mm (4 in) long and 15 mm (0.6 in) wide. The flowers are white to cream-coloured and are arranged in groups of up to thirteen on a peduncle up to 20 mm (0.8 in) long. The flower buds are spindle shaped, 18 mm (0.7 in) long and 3 mm (0.1 in) wide with a horn shaped operculum. The fruit is a short cylinder shape, up to 7 mm (0.3 in) long and 5 mm (0.2 in) wide. Flowering occurs mainly from April to May. [3] [4]
The black-stemmed mallee was first formally described in 1867 by George Bentham who gave it the name Eucalyptus redunca var. melanophloia and published the description in Flora Australiensis . [5] [6] In 1991, Ian Brooker and Stephen Hopper raised the variety to species status but since the name Eucalyptus melanophloia was already used, it was necessary to create a new specific epithet. They raised the name Eucalyptus arachnaea, the epithet is derived from the Latin arachnaeus meaning "spidery", referring to the spidery cluster of flower buds. [4]
Brooker and Hopper described two species that have been accepted by the Australian Plant Census: [4]
Black-stemmed mallee is found in breakaways, slopes and gullies from coastal areas of the Mid West and extending south through the Wheatbelt region of Western Australia. It is common between Northampton in the north to Brookton where it grows in sandy-clay-loamy soils over granite or laterite. [3]
Subspecies arrecta is only known from the type location near Morawa. [4]
This mallee is classified as "not threatened", but subspecies arrecta is classified as "Priority Three" by the Government of Western Australia Department of Parks and Wildlife, [10] meaning that it is poorly known and known from only a few locations but is not under imminent threat. [11]
Eucalyptus caesia, commonly known as caesia or gungurru, is a species of mallee that is endemic to the south-west of Western Australia. It has smooth reddish brown bark at first, later shedding in curling flakes, lance-shaped, sometimes curved adult leaves, club-shaped flower buds covered with a waxy, bluish white bloom, pink stamens with yellow anthers and urn-shaped fruit.
Eucalyptus eremophila, commonly known as the sand mallet or tall sand mallee, is a species of mallet that is endemic to semi-arid regions of Western Australia. It has smooth pale brown and greyish bark, narrow lance-shaped to elliptical adult leaves, flower buds arranged in groups of between seven and eleven with an elongated operculum, and cup-shaped to barrel-shaped fruit.
Eucalyptus macrorhyncha, commonly known as the red stringybark, is a species of medium-sized tree that is endemic to eastern Australia. It has rough, stringy, grey to brown bark, lance-shaped adult leaves, flower buds in groups of between seven and eleven, white flowers and hemispherical fruit.
Eucalyptus ebbanoensis, commonly known as the sandplain mallee, is a species of mallee that is endemic to Western Australia. It has smooth greyish bark, lance-shaped to curved adult leaves, flower buds in groups of three, whitish flowers and cup-shaped to hemispherical fruit.
Eucalyptus loxophleba, commonly known as York gum, daarwet, goatta, twotta or yandee is a species of tree or mallee that is endemic to Western Australia. It has rough bark on the trunk, smooth olive to brownish bark above, lance-shaped adult leaves, flowers buds in groups of between seven and eleven, white flowers and conical fruit.
Eucalyptus leptopoda, commonly known as the Tammin mallee, is a species of mallee or rarely a tree, that is endemic to Western Australia. It has smooth mottled grey or brownish bark, sometimes with rough bark near the base, linear to curved adult leaves, flower buds usually in groups of seven and eleven, creamy white flowers and hemispherical to flattened spherical fruit.
Eucalyptus capillosa, commonly known as wheatbelt wandoo, or mallee wandoo, is a species of tree or mallee that is endemic to Western Australia. It has smooth, grey bark, lance-shaped to elliptic adult leaves, spindle-shaped flower buds in groups of nine to thirteen, white flowers and barrel-shaped to cylindrical fruit.
Eucalyptus crispata, commonly known as the Yandanooka mallee, is a species of tall mallee that is endemic to a small area on the east coast of Western Australia. It has a stocking of rough bark near the base of its trunk, smooth grey bark above, lance-shaped adult leaves, flower buds in groups of between nine and eleven, whitish to yellowish cream flowers and cup-shaped, barrel-shaped or hemispherical to cylindrical fruit.
Eucalyptus hebetifolia is a species of mallee that is endemic to southern Western Australia. It has smooth grey and brownish bark with loose ribbons of bark near the base, lance-shaped adult leaves, flower buds in groups of up to thirteen, creamy white flowers and conical to barrel-shaped fruit.
Eucalyptus histophylla is a species of mallee or small tree that is endemic to southern Western Australia. It has smooth bark, often with ribbons of shed bark, linear to narrow lance-shaped adult leaves, flower buds arranged in groups in leaf axils, white flowers and cylindrical to barrel-shaped or conical fruit.
Eucalyptus phaenophylla, also known as common southern mallee, is a species of mallee that is endemic to Western Australia. It has smooth bark, linear to narrow lance-shaped or narrow elliptical adult leaves, flower buds in groups of up to thirteen, pale lemon-coloured flowers and barrel-shaped, cylindrical or conical fruit.
Eucalyptus pluricaulis, commonly known as the purple-leaved mallee, is a species of mallee that is endemic to Western Australia. It has smooth bark, dull bluish green, lance-shaped leaves, flower buds in groups of between nine and fifteen, pale yellow flowers and cylindrical to barrel-shaped fruit.
Eucalyptus scyphocalyx, commonly known as goblet mallee, is a species of mallee that is endemic to southern areas of Western Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of three or seven, creamy white flowers and cup-shaped to cylindrical fruit.
Eucalyptus subangusta is a species of tree, mallee or mallet that is endemic to the southwest of Western Australia. It has smooth bark, narrow lance-shaped leaves, flower buds in groups of up to nineteen, white flowers and cup-shaped to barrel-shaped fruit.
Eucalyptus thamnoides is a species of mallee that is endemic to south western Western Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of seven, cream-coloured to pale yellow flowers and cup-shaped, conical or bell-shaped fruit.
Eucalyptus varia is a species of mallee that is endemic to an area near the south coast of Western Australia. It has smooth bark, narrow lance-shaped adult leaves, flower buds in groups of nine or eleven, yellow flowers and barrel-shaped to cylindrical fruit.
Eucalyptus xanthonema, commonly known as yellow-flowered mallee, is a species of mallee that is endemic to the south west of Western Australia. It has smooth bark, linear adult leaves, flower buds in groups of up to eleven, white to pale lemon-coloured flowers and barrel-shaped fruit.
Eucalyptus conglobata, also known as the cong mallee or Port Lincoln mallee, is a species of eucalypt that is native to the south coast of Western Australia and South Australia. It is a mallee with smooth bark, lance-shaped adult leaves, flower buds in groups of seven, white flowers and clustered hemispherical fruit.
Eucalyptus crucis is a species of mallee that is endemic to Western Australia. There are three subspecies, commonly known as silver mallee or Southern Cross mallee,, narrow-leaved silver mallee, and Paynes Find mallee,. It has rough bark that is shed in curling flakes, more or less round, glaucous juvenile leaves, egg-shaped intermediate leaves and lance-shaped adult leaves. The type of bark and the proportion of juvenile, intermediate and adult leaves in the crown of mature plants varies with subspecies. The flower buds are arranged in groups of seven in leaf axils, the flowers are whitish to pale yellow and the fruit is a conical to hemispherical capsule.
Eucalyptus densa is a species of mallee or mallet that is endemic to Western Australia. It has smooth greyish bark that is shed in curly strips, linear to narrow lance-shaped adult leaves, long, spindle-shaped flower buds in groups of seven or nine, pale yellow or lemon-coloured flowers and conical, cylindrical or barrel-shaped fruit.