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''Eucalyptus calcareana'', commonly known as the Nundroo mallee or Nundroo gum, is a mallee or a small tree that is endemic to the south coast of 
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 has smooth, greyish or cream-coloured bark, lance-shaped or curved adult leaves, flower buds in groups of seven or nine, creamy-white flowers and cup-shaped to conical fruit.
Description
''Eucalyptus calcareana'' is a mallee or a small tree that typically grows to a height of about and forms a lignotuber. It has smooth grey, cream-coloured, white and orange bark that is shed in short ribbons. Young plants and coppice regrowth have leaves arranged alternately and dull bluish green, egg-shaped to broadly lance-shaped long and wide. Adult leaves are lance-shaped to curved, the same glossy green on both sides, long and wide on a petiole long. The flower buds are borne in groups of seven or nine in leafaxil
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 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 long. Mature buds are oval to cylindrical, long and wide with a conical operculum long. Flowering mainly occurs in March and April and the flowers are creamy white. The fruit is a woody cup-shaped or conical capsule long and wide on a pedicel long, the valves just above of slightly below the rim.
Taxonomy and naming
''Eucalyptus calcareana'' was first formally described in 1979 by Clifford Boomsma from specimens collected near Nundroo. Thespecific 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 ...
(''calcareana'') is derived from the Latin word ''calcareus'' meaning "of lime" or "limy" referring to the soil type where this species grows.
Distribution and habitat
Nundroo mallee is found along the south coast of the Goldfields-Esperance region of Western Australia and the south coast of South Australia. It is found from the east of Esperance to coastal areas of the western Eyre Peninsula.Use in horticulture
This eucalypt is grown in exposed locations and is suitable as a windbreak or shade tree.See also
* List of ''Eucalyptus'' speciesReferences
{{Taxonbar, from=Q15395887 calcareana Flora of South Australia Mallees (habit) Myrtales of Australia Eucalypts of Western Australia Trees of Australia Goldfields-Esperance Plants described in 1979