''Eucalyptus camphora'', commonly known as swamp gum is a flowering plant that is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to south-eastern

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

. It is a species of small to medium-sized tree with smooth bark, sometimes rough at the base, broadly lance-shaped to egg-shaped or elliptic adult leaves, flower buds in groups of seven, white flowers and conical fruit. There are two subspecies, subspecies ''camphora'', commonly known as broad-leaved sally or swamp gum and subspecies ''humeana'', commonly known as mountain swamp gum. Eucalyptus camphora subsp

Description

''Eucalyptus camphora'' is tree that typically grows to a height of , sometimes a mallee to , and forms a

lignotuber A lignotuber is a woody swelling of the root crown possessed by some plants as a protection against destruction of the plant stem, such as by fire. Other woody plants may develop basal burls as a similar survival strategy, often as a response t ...

. It has smooth grey to brownish or almost black bark from the trunk to the thinnest branches, although sometimes with accumulated shed bark at the base. Young plants and

coppice Coppicing is a traditional method of woodland management which exploits the capacity of many species of trees to put out new shoots from their stump or roots if cut down. In a coppiced wood, which is called a copse, young tree stems are repeated ...

regrowth have green or bluish green, egg-shaped, elliptic or almost round leaves long, wide and have a petiole. Adult leaves are broadly lance-shaped to egg-shaped, long and wide on a petiole long. The flowers buds are arranged in groups of seven in leaf

axil A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, st ...

s on an unbranched peduncle long, the individual flowers on a

pedicel Pedicle or pedicel may refer to: Human anatomy *Pedicle of vertebral arch, the segment between the transverse process and the vertebral body, and is often used as a radiographic marker and entry point in vertebroplasty and kyphoplasty procedures ...

long. Mature buds are spindle-shaped to diamond-shaped, long and wide with a conical to beaked operculum. Flowering mainly occurs from January to April and the flowers are white. The fruit that follows is a woody, conical or hemispherical capsule long and .

Taxonomy and naming

''Eucalyptus camphora'' was first formally described in 1899 by

Richard Thomas Baker Richard Thomas Baker (1 December 1854 – 14 July 1941) was an Australian economic botanist, museum curator and educator. Early life Baker was born in Woolwich, England, son of Richard Thomas Baker, a blacksmith, and his wife Sarah, née Colkett. ...

who published the description in the ''

Proceedings of the Linnean Society of New South Wales The Linnean Society of New South Wales promotes ''the Cultivation and Study of the Science of Natural History in all its Branches'' and was founded in Sydney, New South Wales ( Australia) in 1874 and incorporated in 1884. History The Society suc ...

''. He had collected the type specimen "at Ganguddy Creek, Kelgoola,

Rylstone Rylstone is a village and civil parish in the Craven district of North Yorkshire, England. It is situated very near to Cracoe and about 6 miles south west of Grassington. The population of the civil parish as of the 2011 census was 160. Ryls ...

, in 1895". The

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

(''camphora'') refers to

camphor Camphor () is a waxy, colorless solid with a strong aroma. It is classified as a terpenoid and a cyclic ketone. It is found in the wood of the camphor laurel ('' Cinnamomum camphora''), a large evergreen tree found in East Asia; and in the k ...

in the

essential oil An essential oil is a concentrated hydrophobic liquid containing volatile (easily evaporated at normal temperatures) chemical compounds from plants. Essential oils are also known as volatile oils, ethereal oils, aetheroleum, or simply as the o ...

of the leaves. In 1990,

Lawrie Johnson Lawrence Alexander Sidney Johnson Fellow of the Australian Academy of Science, FAA, (26 June 1925 – 1 August 1997) known as Lawrie Johnson, was an Australian Taxonomy (biology), taxonomic botany, botanist. He worked at the Royal Botanic Garden ...

and Ken Hill described three subspecies of ''E. camphora'', two of which have been accepted by the

Australian Plant Census The Australian Plant Census (APC) provides an online interface to currently accepted, published, scientific names of the vascular flora of Australia, as one of the output interfaces of the national government Integrated Biodiversity Information Syst ...

: * ''Eucalyptus camphora'' R.T.Baker subsp. ''camphora'' has adult leaves with a petiole less than long; * ''Eucalyptus camphora'' subsp. ''humeana'' L.A.S.Johnson & K.D.Hill has adult leaves with a petiole long. The subspecies epithet (''humeana'') honours the explorer

Hamilton Hume Hamilton Hume (19 June 1797 – 19 April 1873) was an early explorer of the present-day Australian states of New South Wales and Victoria. In 1824, along with William Hovell, Hume participated in an expedition that first took an overland route ...

. ''Eucalyptus camphora'' subsp. ''relicta'' and ''E. ovata'' var. ''camphora'' are

synonyms A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...

of ''E. camphora'' subsp. ''camphora''.

Distribution and habitat

Subspecies ''camphora'' grows in forest, often in marshy places and in valleys from south from

Wallangarra Wallangarra is a rural town and locality in the Southern Downs Region, Queensland, Australia on the border with New South Wales. In the , the locality of Wallangarra had a population of 468 people. It is the third-most southerly town in Queens ...

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

to near Glen Innes in

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

, then from near Rylstone to the

Megalong Valley Megalong Valley is part of the Blue Mountains of New South Wales, Australia. It is located west of Katoomba. On its eastern side, the valley is separated from the Jamison Valley by Narrow Neck Plateau. The Shipley Plateau overlooks part of th ...

. Subspecies ''humeana'' grows in similar habitats from

Wee Jasper Wee Jasper is a hamlet in the Goodradigbee River, Goodradigbee valley at the western foot of the Brindabella Ranges, near Burrinjuck Dam in New South Wales, Australia in Yass Valley Council, Yass Valley Shire. It is located about 90 km nort ...

in New South Wales to the mountainous country east and north of

Melbourne Melbourne ( ; Boonwurrung/Woiwurrung: ''Narrm'' or ''Naarm'') is the capital and most populous city of the Australian state of Victoria, and the second-most populous city in both Australia and Oceania. Its name generally refers to a met ...

in Victoria.

References

{{Taxonbar, from=Q12839325

camphora Camphora may refer to: * Camphora, a synonym for the chemical compound camphor * Camphora, California, an unincorporated community in Monterey County * Camphora (plant), genus of evergreen trees **Particularly ''Camphora officinarum ''Camphora ...

Trees of Australia Myrtales of Australia Flora of Victoria (Australia) Flora of New South Wales Plants described in 1899 Taxa named by Richard Thomas Baker