''Eucalyptus pachyloma'', commonly known as Kalgan Plains mallee,
is a species of
mallee that is native to Western Australia. It has smooth, greyish bark, lance-shaped adult leaves, flower buds in groups of between seven and thirteen, white to cream-coloured flowers and conical to cup-shaped fruit.
Description
The
mallee typically grows to a height of and has smooth
[ grey-brown to green coloured bark and forms a lignotuber. The concolorous, glossy, green adult leaves are erect and alternately arranged. The leaf blade is usually a ]lanceolate
The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular o ...
shape with a length of and a width of with a pointed apex and a base that tapers to the petiole.[ It blooms between October and March producing white to cream coloured flowers.][ Each axillary unbranched ]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 o ...
has umbels containing seven to thirteen buds. The ovoid to globular shaped mature buds have a length of and a width of with no scar. The single operculum has a conical to rounded with irregularly flexed stamens. The fruit that form later are broadly cupular to obconical in shape with a length of and a width of with a raised and convex disc and three valves at rim level. The brown seeds within are pyramidal to semi-circular in shape and long.
Taxonomy
''Eucalyptus pachyloma'' was first formally described by the botanist George Bentham in 1867 in '' Flora Australiensis''.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 ...
is taken from the Greek word ''pachy'' meaning ''thick'' and ''loma'' meaning ''border'' in reference to the thick rim of the fruit of the plant.[
This species is part of the ''Eucalyptus'' subgenus series ''Diversiformae'', a group of mallees that all have adult leaves held erect, buds with a single unscarred operculum and pyramidal seeds. The other species in series this series include '' E. erectifolia'', '' E. platydisca'', '' E. diversifolia'', '' E. todtiana'', '' E. lateritica'', '' E. dolorosa'' and '' E. buprestium''.]
Distribution
Kalgan Plains mallee is found on sandplains and foothills growing in sandy soils in the southern Wheatbelt and Great Southern regions of Western Australia extending from around Pingelly in the north through to Albany in the south.[
]
Conservation status
This eucalypt is classified as "not threatened" by the Western Australian Government 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 e ...
.
See also
* List of ''Eucalyptus'' species
References
{{Taxonbar, from=Q15354101
Eucalypts of Western Australia
pachyloma
Myrtales of Australia
Plants described in 1867
Taxa named by George Bentham