''Eucalyptus decolor'' is a species of small to medium-sized tree 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 els ...

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_ ...

. It has rough, hard, fissured "

ironbark Ironbark is a common name of a number of species in three taxonomic groups within the genus ''Eucalyptus'' that have dark, deeply furrowed bark. Instead of being shed annually as in many of the other species of ''Eucalyptus'', the dead bark accum ...

", lance-shaped to curved adult leaves that are distinctly paler on the lower surface, flower buds in groups of seven, white flowers and hemispherical to cup-shaped fruit.

Description

''Eucalyptus decolor'' is a tree that typically grows to a height of 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 hard, dark grey fissured "ironbak" on the trunk and larger branches, white to pinkish bark on the thinner branches. 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 repea ...

regrowth have narrow lance-shaped leaves long and wide. Adult leaves are lance-shaped to curved, distinctly paler on the lower surface, long and wide on a petiole long. The flower buds are arranged on a branching

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed ...

with the buds in groups of seven on each branch. The groups are on a

peduncle Peduncle may refer to: *Peduncle (botany), a stalk supporting an inflorescence, which is the part of the shoot of seed plants where flowers are formed *Peduncle (anatomy), a stem, through which a mass of tissue is attached to a body **Peduncle (art ...

long, the individual buds 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, about long and wide with a conical operculum. Flowering occurs from December to March and the flowers are white. The fruit is a woody hemispherical to cup-shaped capsule long and wide on a pedicel long.

Taxonomy and naming

''Eucalyptus decolor'' was first formally described in 1989 by

Anthony Bean Anthony Russell Bean (born 1957) is an Australian botanist who works at the Queensland Herbarium and Brisbane Botanic Gardens, Mount Coot-tha. Since 1982, he has led the Eucalyptus Study Group of the Society for Growing Australian Plants. Care ...

and

Ian Brooker Murray Ian Hill Brooker AM (2 June 1934 – 25 June 2016), better known as Ian Brooker, was an Australian botanist. He was widely recognised as the leading authority on the genus ''Eucalyptus''. Ian Brooker was born in Adelaide, South Austral ...

from a specimen that Bean collected on Mount Castletower near

Port Curtis Port Curtis is a suburb of Rockhampton in the Rockhampton Region, Queensland, Australia. In the , Port Curtis had a population of 281 people. Geography The Fitzroy River bounds the suburb to the north-east. Gavial Creek, a tributary of the ...

. The description was published in the journal ''

Austrobaileya ''Austrobaileya'' is the sole genus consisting of a single species that constitutes the entire flowering plant family Austrobaileyaceae. The species ''Austrobaileya scandens'' grows naturally only in the Wet Tropics rainforests of northeast ...

''. 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 ...

(''decolor'') is a

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power ...

word meaning "discolored" or "faded", referring to the pale underside of the leaves.

Distribution and habitat

This eucalypt is only known from a few small populations, mostly in hilly and mountainous country in south-east Queensland.

Conservation status

''Eucalyptus decolor'' is classed as "near threatened" under the Queensland Government ''

Nature Conservation Act 1992 The ''Nature Conservation Act 1992'' is an act of the Parliament of Queensland, Australia, that, together with subordinate legislation, provides for the legislative protection of Queensland's threatened biota. As originally published, it prov ...

''. The main threats to the species are land clearing and inappropriate fire regimes.

References

{{Taxonbar, from=Q15396579 Trees of Australia decolor Myrtales of Australia Flora of Queensland Taxa named by Ian Brooker Plants described in 1989

Description

Taxonomy and naming

Distribution and habitat

Conservation status

See also

References