Eucalyptus ovata
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Eucalyptus ovata, commonly known as swamp gum or black gum,[1] is a small to medium-sized tree species that is endemic to south-eastern Australia. It has mostly smooth bark, glossy green, lance-shaped to egg-shaped adult leaves, green flower buds in groups of seven, white flowers and conical to bell-shaped fruit.
Description
Eucalyptus ovata is a tree that typically grows to a height of Template:Cvt and forms a lignotuber, but with a variable habit, from a straggly sapling in east Gippsland to stout-boled elsewhere. It has smooth, grey, whitish or pinkish-grey new bark, sometimes with loose rough bark near the base of larger trees. Young plants and coppice regrowth have elliptical to egg-shaped leaves that are Template:Cvt long and Template:Cvt wide. Adult leaves are the same shade of glossy green on both sides, lance-shaped to egg-shaped, Template:Cvt long and Template:Cvt wide, tapering to a petiole Template:Cvt long. The flower buds are arranged in leaf axils on an unbranched peduncle, Template:Cvt long, the individual buds on pedicels Template:Cvt long. Mature buds are diamond-shaped, Template:Cvt long and Template:Cvt wide with a conical operculum. Flowering mainly occurs from June to November and the flowers are white. The fruit is a woody, conical to slightly bell-shaped capsule Template:Cvt long and Template:Cvt wide with the valves near rim level.[1][2][3][4][5]
Taxonomy and naming
Eucalyptus ovata was first formally described in 1806 by Jacques Labillardière in Novae Hollandiae Plantarum Specimen.[6][7] The specific epithet (ovata) is from the Latin ovatus, referring to the leaf shape.[1]
In 1916, Joseph Maiden described two varieties of E. ovata in his book, A Critical Revision of the Genus Eucalyptus, and the names have been accepted by the Australian Plant Census:
- Eucalyptus ovata var. grandiflora Maiden;[8][9]Template:Rp
- Eucalyptus ovata Labill. var. ovata.[9]Template:Rp[10]
Distribution and habitat
Swamp gum is widespread in south-eastern Australia and is found from the western end of Kangaroo Island and the southern Mount Lofty ranges in the south-east of South Australia, to Tasmania, the southern half of Victoria and to south-eastern New South Wales as far north as Oberon and Hill Top. It grows in grassy woodland in low, temporarily or permanently damp sites.[1][2][3][5]
References
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- ↑ Brooker & Kleinig, Field Guide to Eucalypts, Vol 2 South Western and Southern Australia, Bloomings Books, Melbourne, 2001, Template:ISBN
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