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Gray Ironbark

Eucalyptus paniculata Sm.

Description

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Trees, large. Bark grayish, rough, persistent. Branchlets terete. Young leaves opposite, shortly petiolate; leaf blade broadly lanceolate to ovate, ca. 6 × 2-4 cm. Leaf blade of intermediate leaves broadly lanceolate, 8-10 × ca. 3.5 cm. Mature leaves with a 1-1.5 cm petiole; leaf blade lanceolate, 9-13 × 2-3 cm, slightly oblique, secondary veins at an angle of 40°-50° from midvein and conspicuous, intramarginal veins ca. 0.5 mm from margin. Inflorescences terminal, paniculate, umbels 3-9-flowered; peduncle ca. 1 cm, slightly ridged. Flower buds 7-9 mm. Hypanthium obovoid to obconic, 6-8 mm; stipe 2-10 mm; calyptra pyramidal awl-shaped, shorter than hypanthium, apex slightly acute. Capsule truncately capitate pyriform, 7-9 × ca. 5 mm; disk obscure; valves usually 4, equaling hypanthium rim or included. Fl. Aug-Oct.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 13: 323, 328 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of China @ eFloras.org
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Wu Zhengyi, Peter H. Raven & Hong Deyuan
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eFloras.org
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Habitat & Distribution

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Cultivated in Guangdong, Guangxi, and Jiangxi [native to SE Australia].
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 13: 323, 328 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
original
visit source
partner site
eFloras

Eucalyptus paniculata

provided by wikipedia EN

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flowers and buds
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fruit

Eucalyptus paniculata, commonly known as grey ironbark,[2] is a species of tree that is endemic to New South Wales. It has dark-coloured, deeply furrowed ironbark on the trunk and branches, lance-shaped to curved adult leaves, flower buds in groups of seven on a branched peduncle, white flowers and conical, hemispherical or cup-shaped fruit.

Description

Eucalyptus paniculata is a tree that typically grows to a height of 30–50 m (98–164 ft) and forms a lignotuber. It has grey to black or brownish, deeply furrowed ironbark on the trunk and branches. Young plants and coppice regrowth have egg-shaped to lance-shaped leaves that are a lighter shade of green on the lower side, 35–70 mm (1.4–2.8 in) long and 15–30 mm (0.59–1.18 in) wide. Adult leaves are glossy green, a lighter shade on the lower side, lance-shaped to curved, 50–180 mm (2.0–7.1 in) long and 12–30 mm (0.47–1.18 in) wide, tapering to a petiole 9–25 mm (0.35–0.98 in) long. The flower buds are mostly arranged in groups of seven on a branched peduncle 5–15 mm (0.20–0.59 in) long, the individual buds on pedicels 3–9 mm (0.12–0.35 in) long. Mature buds are oval to diamond-shaped, 5–9 mm (0.20–0.35 in) long and 4–5 mm (0.16–0.20 in) wide with a conical operculum, the floral cup more or less square in cross-section. Flowering occurs in most months and the flowers are white. The fruit is a woody, conical, hemispherical or cup-shaped capsule 4–8 mm (0.16–0.31 in) long and wide with the valves close to rim level.[2][3][4][5]

Taxonomy and naming

Eucalyptus paniculata was first formally described in 1797 by James Edward Smith in Transactions of the Linnean Society of London from material collected by David Burton at Port Jackson. Smith obtained the specimens from the herbarium of Joseph Banks.[6][7] The specific epithet (paniculata) is from the Latin word paniculatus meaning paniculate, referring to the arrangement of the flowers.[3]

Distribution and habitat

Grey ironbark grows in high rainfall coastal areas from Bermagui to Bulahdelah. Previously a common tree in the inner western suburbs of Sydney. A remnant ironbark still grows in the inner city suburb of Glebe at St. Johns church.[8]

Uses

Grey ironbark is well regarded by foresters for the high quality of timber. It is particularly hard, strong and durable, and is suitable for the making of archery bows.[9] A very dense timber, being 1120 kilograms per cubic metre. Heart wood is red-brown or dark brown. The timber has various uses, including railway sleepers, heavy engineering, construction, poles and cross-arms.[10] Timber is difficult to plane and nail. It is slow in drying, requiring careful handling to avoid surface checking.[11] Annual wood production potential is 9 to 18 cubic metres per hectare.[12] The timber is not susceptible to the lyctus borer.

Gallery

References

  1. ^ a b "Eucalyptus paniculata". Australian Plant Census. Retrieved 26 November 2019.
  2. ^ a b Hill, Ken. "Eucalyptus paniculata". Royal Botanic Garden Sydney. Retrieved 26 November 2019.
  3. ^ a b "Eucalyptus paniculata". Euclid: Centre for Australian National Biodiversity Research. Retrieved 26 November 2019.
  4. ^ Chippendale, George M. "Eucalyptus paniculata". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 26 November 2019.
  5. ^ Brooker, M. Ian H.; Kleinig, David A. (1994). Field Guide to Eucalypts. Melbourne: Inkata Press. p. 265. ISBN 0909605629.
  6. ^ "Eucalyptus paniculata". APNI. Retrieved 26 November 2019.
  7. ^ Smith, James Edward (1797). "Botanical Characters of Some Plants of the Natural Order of Myrti". Transactions of the Linnean Society of London. 3: 287–288. Retrieved 26 November 2019.
  8. ^ Les Robinson - Field Guide to the Native Plants of Sydney, ISBN 978-0-7318-1211-0 page 48
  9. ^ http://paleoplanet69529.yuku.com/reply/154114/Holmegaard-Grey-Ironbark-Eucalyptus-paniculata-#.VG5va_mUcSc
  10. ^ Forest Trees of Australia, D.J. Boland et al. 1992 ISBN 0-909605-57-2 page 538
  11. ^ http://www.timber.net.au/?option=com_species&name=Grey%20Ironbark&Itemid=433
  12. ^ http://ecocrop.fao.org/ecocrop/srv/en/cropView?id=590
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Eucalyptus paniculata: Brief Summary

provided by wikipedia EN
" flowers and buds" fruit

Eucalyptus paniculata, commonly known as grey ironbark, is a species of tree that is endemic to New South Wales. It has dark-coloured, deeply furrowed ironbark on the trunk and branches, lance-shaped to curved adult leaves, flower buds in groups of seven on a branched peduncle, white flowers and conical, hemispherical or cup-shaped fruit.

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Wikipedia authors and editors
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wikipedia EN