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Eucalyptus dealbata

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Myrtales

Familia: Myrtaceae
Subfamilia: Myrtoideae
Tribus: Eucalypteae
Genus: Eucalyptus
Subgenus: E. subg. Symphyomyrtus
Sectio: E. sect. Exsertaria
Series: E. ser. Erythroxylon
Species: Eucalyptus dealbata

Eucalyptus dealbata A.Cunn. ex Schauer (1843)

Walpers, G.G. 1843. Repertorium Botanices Systematicae. Tomus II. 1029 pp. Sumtibus Friderici Hofmeister, Lipsiae [Leipzig]. BHL Reference page. (p.924.)
USDA, ARS, Germplasm Resources Information Network. Eucalyptus dealbata in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.
International Plant Names Index. 2018. Eucalyptus dealbata. Published online. Accessed: Jan. 30, 2018.
Eucalyptus dealbata in: Australian Plant Census (APC) 2018. IBIS database, Centre for Australian National Biodiversity Research, Council of Heads of Australasian Herbaria. Accessed: 2018 Jan. 30.
Govaerts, R. et al. Eucalyptus dealbata. Kew Science Plants of the World. Accessed 2018 January 30.
Govaerts, R. et al. 2018. Eucalyptus dealbata in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2018 Jan. 30. Reference page.

Eucalyptus dealbata, known as the tumbledown red gum or hill redgum,[2] is a species of small tree that is endemic to eastern Australia. It has mostly smooth, white to grey or brownish bark, lance-shaped to egg-shaped adult leaves, flower buds in groups of between seven and eleven, white flowers and hemispherical fruit with the valves extended well beyond the rim of the fruit.


Eucalyptus dealbata is a tree that typically grows to a height of 15–20 m (49–66 ft) and forms a lignotuber. It has smooth white to grey or brownish bark, sometimes with persistent slabs of rough grey bark. Young plants and coppice regrowth have leaves that are egg-shaped, bluish green, 65–80 mm (2.6–3.1 in) long and 30–42 mm (1.2–1.7 in) wide. Adult leaves are the same dull bluish green on both sides, lance-shaped to egg-shaped, 55–140 mm (2.2–5.5 in) long and 10–40 mm (0.39–1.57 in) wide on a petiole 8–30 mm (0.31–1.18 in) long. The buds are arranged in groups of seven or nine, rarely eleven, in leaf axils on an unbranched peduncle 5–15 mm (0.20–0.59 in) long, the individual buds on a pedicel 1–4 mm (0.039–0.157 in) long. Mature buds are oval to diamond-shaped, glaucous, 6–13 mm (0.24–0.51 in) long and 3.5–5 mm (0.14–0.20 in) wide with a conical operculum 4–8 mm (0.16–0.31 in) long. Flowering occurs between September and November and the flowers are white. The fruit is a woody, hemispherical capsule 2–6 mm (0.079–0.236 in) long and 5–7 mm (0.20–0.28 in) wide with the valves extended well beyond the rim of the fruit.[2][3][4]
Taxonomy and naming

Eucalyptus dealbata was first formally described in a manuscript by Allan Cunningham but the description was published in 1843 by Johannes Schauer in Walper's book Repertorium Botanices Systematicae.[5][6] The specific epithet (dealbata) is a Latin word meaning "whitened"[7] referring to the glaucous flower buds and fruit.[2]
Distribution and habitat

The tumbledown red gum grows in grassy open woodland in poor, rocky soil south from Emerald in Queensland through the western slopes and tablelands of New South Wales. Some authorities list it as occurring in Victoria but the Royal Botanic Gardens Victoria lists examples occurring in that state as referring to Eucalyptus blakelyi.[3][4][8]

This eucalypt is a major source of pollen and the honey produced from it is pleasantly flavoured.[3]

"Eucalyptus dealbata". Australian Plant Census. Retrieved 22 May 2019.
"Eucalyptus dealbata". Euclid: Centre for Australian National Biodiversity Research. Retrieved 4 June 2020.
Chippendale, George M. "Eucalyptus dealbata". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 22 May 2019.
Hill, Ken. "Eucalyptus dealbata". Royal Botanic Garden Sydney. Retrieved 22 May 2019.
"Eucalyptus dealbata". APNI. Retrieved 22 May 2019.
Walper, Wilhelm Gerhard (ed.); Schauer, Johannes Conrad (1843). Repertorium Botanices Systematicae (Volume 2). New York. p. 924. Retrieved 22 May 2019. {{cite book}}: |first1= has generic name (help)
Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 254.
Brooker, M. Ian H.; Slee, Andrew V. "Eucalyptus blakelyi". Royal Botanic Gardens Victoria. Retrieved 22 May 2019.

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