''Eucalyptus websteriana'', commonly known as Webster's mallee, heart-leaf mallee or dainty mallee, is a species of mallee that is

endemic Endemism is the state of a species being found only 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 foun ...

to the Goldfields-Esperance region of Western Australia. It has reddish minnirichi bark on the trunk and branches, egg-shaped to heart-shaped adult leaves, flower buds in groups of seven, pale cream-coloured to yellow flowers and usually hemispherical fruit.

Description

''Eucalyptus websteriana'' is a mallee that typically grows to a height of with a spreading habit, 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 respons ...

. It has reddish brown minnirichi bark on the trunk and branches. The adult leaves have a distinctive heart shape and the tree has a compact

crown A crown is a traditional form of head adornment, or hat, worn by monarchs as a symbol of their power and dignity. A crown is often, by extension, a symbol of the monarch's government or items endorsed by it. The word itself is used, parti ...

, providing lightly dappled shade that benefits plants in the undergrowth. The leaves are the same shade of greyish green on both sides, long and wide, tapering to a

petiole Petiole may refer to: *Petiole (botany), the stalk of a leaf, attaching the blade to the stem *Petiole (insect anatomy) In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and ...

long. The flower buds are arranged in leaf

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

s in groups of seven on an unbranched peduncle long, the individual buds on

pedicels In botany, a pedicel is a stem that attaches a single flower to the inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branch ...

long. Mature buds are spherical, long and wide with a rounded operculum that has a small point on the top. Flowering occurs from July to November and the flowers are pale cream-coloured to yellow. The fruit is a woody hemispherical, sometimes conical, capsule long and wide with the valves protruding prominently.

Taxonomy and naming

''Eucalyptus websteriana'' was first formally described in 1916 by

Joseph Maiden Joseph Henry Maiden (25 April 1859 – 16 November 1925) was a botanist who made a major contribution to knowledge of the Australian flora, especially the genus ''Eucalyptus''. This botanist is denoted by the author abbreviation when citing ...

in the '' Journal and Proceedings of the Royal Society of New South Wales'' from specimens collected by Leonard Clarke Webster, a pharmacist and doctor who lived in Kalgoorlie and sold botanical specimens to the

British Museum of Natural History The Natural History Museum in London is a museum that exhibits a vast range of specimens from various segments of natural history. It is one of three major museums on Exhibition Road in South Kensington, the others being the Science Museum (Lo ...

. The

specific epithet In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...

honours the collector of the

type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * ...

specimens. This mallee resembles '' E. orbifolia'', with both having a similar leaf-shape, and it is also closely related to '' E. ewartiana'' and '' E. crucis''.

Distribution

This mallee is found on rocky rises in the Goldfields-Esperance region of Western Australia in an area centred around

Kalgoorlie Kalgoorlie-Boulder (or just Kalgoorlie) is a city in the Goldfields–Esperance region of Western Australia, located east-northeast of Perth at the end of the Great Eastern Highway. It is referred to as Kalgoorlie–Boulder as the surroundi ...

. Its range extends to the western fringe of the

Great Victoria Desert The Great Victoria Desert is a sparsely populated desert ecoregion and Interim Biogeographic Regionalisation for Australia, interim Australian bioregion in Western Australia and South Australia. History In 1875, British-born Australian explore ...

to the east of

Cosmo Newberry Cosmo Newbery (also spelt Cosmo Newberry) is a small Aboriginal community in Western Australia, east of Perth between Laverton and Warburton in the Goldfields-Esperance region of Western Australia. In the , Cosmo Newberry had a total popul ...

down to around

Kambalda Kambalda is a small mining town about from the Kalgoorlie in Western Australia, within the Goldfields. It is split into two townsites apart, Kambalda East and Kambalda West; and is located on the western edge of a giant salt lake, Lake Lefr ...

and

Norseman The Norsemen (or Northmen) were a cultural group in the Early Middle Ages, originating among speakers of Old Norse in Scandinavia. During the late eighth century, Scandinavians embarked on a large-scale expansion in all directions, giving ris ...

in the south west where it grows in rocky soils.

Conservation status

This eucalypt is classified as "not threatened" by the Government of Western Australia

Department of Parks and Wildlife The Department of Parks and Wildlife (DPaW) was the department of the Government of Western Australia responsible for managing lands described in the ''Conservation and Land Management Act 1984'' and implementing the state's conservation and en ...

References

{{Taxonbar, from=Q15357147 websteriana Endemic flora of Western Australia Mallees (habit) Myrtales of Australia Eucalypts of Western Australia Plants described in 1916 Taxa named by Joseph Maiden

Description

Taxonomy and naming

Distribution

Conservation status

See also

References