Eucalyptus steedmanii

Eucalyptus steedmanii
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species: E. steedmanii
Binomial name
Eucalyptus steedmanii
C.A.Gardner

Eucalyptus steedmanii, commonly known as steedman's gum[1] or steedman's mallet,[2] is a tree that is native to Western Australia.[1]

Description

The erect tree typically grows to a height of 2 to 8 metres (7 to 26 ft) but reach reach as high as 12 m (39 ft). It blooms between January and March producing white flowers.[1] The tree is a Marlock and has no lignotuber.[2] It has smooth bark that ranges from grey to red-brown to a bright coppery colour. It has numerous ascending branches from low on the trunk, forming a very dense crown. Adult leaves are olive-green and glossy in appearance, and are crowded with oil veins the leaves are up to about 8 centimetres (3.1 in) in length with a width of 1.5 cm (0.59 in). Buds form that are yellowish-brown and the fruits are held on long stalks and have a square cross-section. Fruits grow to about 2.2 cm (0.87 in) long with a diameter of 1.7 cm (0.67 in).[3]

Distribution

It is found on low hills and undulating plains betweenRavensthorpe in the Goldfields-Esperance and Kondinin in the Wheatbelt region where it grows in gravelly loamy soils over ironstone.[1] Six populations are known, five of these occur on unallocated Crown land, and one which is split occurs on Crown land and a road verge. It is estimated that there is a total population of 24 500 mature plants that are spread over an area of 83.6 square kilometres (32 sq mi) and tend to occur in pure stands.[3]

History

First formally described by the botanist C.A.Gardner in 1933 as part of the work Contribution to the Flora of Western Australia published in Joseph Maiden's Journal of the Royal Society of Western Australia.[4] The name of the plant honours Henry Steedman who was an avid plant collector.

The species was listed as Vulnerable in 2008 under the Environment Protection and Biodiversity Conservation Act 1999. The main threat to the tree is fire which kills adult plants, but regeneration by seed has been observed. Other threats include mining operations, firebreak maintenance and recreation activities.[3]

See also

References

  1. 1 2 3 4 "Eucalyptus steedmanii". FloraBase. Western Australian Government Department of Parks and Wildlife.
  2. 1 2 "Eucalyptus steedmanii Steedman's Mallet". Windmill Outback Nursery. 2011. Retrieved 19 April 2017.
  3. 1 2 3 "Approved Conservation Advice for Eucalyptus steedmanii (Steedmans Gum)" (PDF). Commonwealth of Australia. 16 December 2008. Retrieved 19 April 2017.
  4. ↑ "Eucalyptus steedmanii C.A.Gardner Steedman's Gum". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 19 April 2017.
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