Английская Википедия:Eucalyptus dalrympleana
Шаблон:Short description Шаблон:Speciesbox
Eucalyptus dalrympleana, commonly known as mountain gum, mountain white gum, white gum and broad-leaved ribbon gum,[1] is a species of tree that is endemic to southeastern Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of three or seven, white flowers and cup-shaped, bell-shaped or hemispherical fruit.
Description
Eucalyptus dalrympleana is a tree that typically grows to a height of Шаблон:Cvt and forms a lignotuber. It has smooth white to yellowish bark, sometimes with a short stocking of rough bark. Young plants and coppice regrowth have leaves arranged in opposite pairs and are egg-shaped or heart-shaped to more or less round, Шаблон:Cvt long and wide. Adult leaves are arranged alternately, lance-shaped to curved, the same colour on both sides, Шаблон:Cvt long and Шаблон:Cvt wide on a petiole Шаблон:Cvt long. The flower buds are arranged in groups of three or seven in leaf axils on a peduncle Шаблон:Cvt long, the individual buds sessile or on a pedicel up to Шаблон:Cvt long. Mature buds are oval, green to yellow, Шаблон:Cvt long and Шаблон:Cvt wide with a conical to rounded operculum. Flowering mainly occurs between March and June and the flowers are white. The fruit is a woody cup-shaped, bell-shaped or hemispherical capsule Шаблон:Cvt long and Шаблон:Cvt wide.[1][2][3][4]
Taxonomy and naming
Eucalyptus dalrympleana was first formally described in 1920 by Joseph Maiden from a specimen collected by Wilfred de Beuzeville near Yarrangobilly. The description was published in Maiden's book, The Forest Flora of New South Wales.[5][6] The specific epithet (dalrympleana) honours the forester, Richard Dalrymple Hay.[1]
In 1962, Lawrie Johnson described two subspecies and the names have been accepted by the Australian Plant Census:
- Eucalyptus dalrympleana Maiden subsp. dalrympleana[7] has flower buds arranged in groups of three;[3]
- Eucalyptus dalrympleana subsp. heptantha L.A.S.Johnson[8] has flower buds and flowers in groups of seven.[3]
Distribution and habitat
Mountain gum grows in woodland and forest at higher elevations in far south-eastern Queensland, New South Wales, Victoria, South Australia and Tasmania. Subspecies heptantha is only found in far south-eastern Queensland and on the northern tablelands of New South Wales. Subspecies dalrympleana occurs south from the central and southern tablelands of New South Wales.[2][3] The species is rare in South Australia where it only occurs in the Mount Lofty Ranges.[9]
Use in horticulture
In cultivation in the UK, E. dalrympleana is fully hardy down to Шаблон:Convert but prefers some shelter. It grows best in full sun. It has gained the Royal Horticultural Society's Award of Garden Merit.[10][11]
References
Шаблон:Commons category Шаблон:Reflist
- Holliday, I. A field guide to Australian trees (3rd edition), Reed New Holland, 2002
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- Eucalyptus
- Myrtales of Australia
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- Flora of South Australia
- Flora of Tasmania
- Flora of Victoria (state)
- Plants described in 1920
- Taxa named by Joseph Maiden
- Trees of Australia
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