Eucalyptus bancroftii

Eucalyptus bancroftii, commonly known as Bancroft's red gum or orange gum,[3] is a species of tree that is endemic to eastern Australia. It has smooth bark, lance-shaped or curved adult leaves, flower buds usually arranged in groups of seven, white flowers and cup-shaped, conical or hemispherical fruit.

fruit in Cranbourne Botanic Gardens

habit near Tamworth

buds

Bancroft's red gum
Eucalyptus bancroftii in the ANBG
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Myrtales
Family:	Myrtaceae
Genus:	Eucalyptus
Species:	E. bancroftii
Binomial name
Eucalyptus bancroftii (Maiden) Maiden[1]
Collections data from AVH
Synonyms[2]
Eucalyptus seeana var. constricta Blakely Eucalyptus tereticornis var. bancroftii Maiden Eucalyptus tereticornis var. brevifolia Benth.

Description

Eucalyptus bancroftii is a tree growing to 30 metres (100 ft) high, with smooth bark which is a patchy grey, salmon and orange, which sheds in large plates.[4] The juvenile leaves are ovate, and a dull grey-green, with the dull, green, concolorous adult leaves being lanceolate or broad-lanceolate, 8–20 centimetres (3–8 in) long, 1.5–4 centimetres (1–2 in) wide.[4]

The flowers are in groups of seven on a stem of length 5–20 millimetres (0.2–0.8 in) with four angles. Each flower is on a terete stem (pedicel) of length 2–5 millimetres (0.1–0.2 in).[4] The buds are cylindrical or conical, and 10–15 millimetres (0.4–0.6 in) long and 4–6 millimetres (0.16–0.24 in) in diameter, and have a scar.[4]

The fruit is hemispherical or conical, and 7–9 millimetres (0.3–0.4 in) long and 8–9 millimetres (0.3–0.4 in) in diameter with a raised disc and exserted valves.[4]

Taxonomy and naming

Bancroft's red gum was first formally described in 1904 by Joseph Maiden who gave it the name Eucalyptus tereticornis var. bancroftii and published the description in his book The Forest Flora of New South Wales.[5][6] In 1917, Maiden raised the variety to species status as E. bancroftii, publishing the change in A Critical Revision of the Genus Eucalyptus.[7] Maiden noted that he collected the type specimen "from Honeysuckle Flat, about 9 miles south of Port Macquarie, N.S.W., on serpentine country bearing stunted vegetation" in July, 1895. The specific epithet (bancroftii) honours "Dr. Thomas Lane Bancroft" for his assistance to Maiden.[8]

Distribution and habitat

Eucalyptus bancroftii occurs from Maitland and Port Macquarie in New South Wales north to the Tin Can Bay - Boonooroo area in Queensland. It is mainly found in coastal areas but extends to the adjacent tablelands and grows in open forest and woodland, sometimes in low swampy sites but also on rock outcrops on the tablelands.[3][4][9]

References

1. "Eucalyptus bancroftii". Australian Plant Census. Retrieved 9 March 2019.
2. Govaerts, R.; et al. (2018). "Plants of the world online Eucalyptus bancroftii". Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 31 July 2018.
3. Chippendale, George M. "Eucalyptus bancroftii". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 11 March 2019.
4. Hill, K. (1991). "PlantNET Eucalyptus bancroftii". National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved 31 July 2018.
5. "Eucalyptus tereticornis var. bancroftii". APNI. Retrieved 11 March 2019.
6. Maiden, Joseph (1904). The Forest Flora of New South Wales (Volume 2). Sydney: Government Printer. p. 9. Retrieved 11 March 2019.
7. "Eucalyptus bancroftii". APNI. Retrieved 11 March 2019.
8. Maiden, Joseph (1917). A Critical Revision of the Genus Eucalyptus (Volume 4). Sydney: Government Printer. pp. 14–18. Retrieved 11 March 2019.
9. "Eucalyptus bancroftii". Centre for Australian National Biodiversity Research. Retrieved 11 March 2019.