Leucopogon Glaucifolius
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''Leucopogon glaucifolius'' is a species of flowering plant in the family
Ericaceae The Ericaceae are a family of flowering plants, commonly known as the heath or heather family, found most commonly in acidic and infertile growing conditions. The family is large, with c.4250 known species spread across 124 genera, making it th ...
and 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 the
south-west The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each se ...
of Western Australia. It is an erect or spreading shrub with linear, sharply-pointed leaves, and white, tube-shaped flowers.


Description

''Leucopogon glaucifolius'' is an erect or spreading shrub that typically grows to a height of less than and has branches covered with fine hairs. Its leaves are
glabrous Glabrousness (from the Latin ''glaber'' meaning "bald", "hairless", "shaved", "smooth") is the technical term for a lack of hair, down, setae, trichomes or other such covering. A glabrous surface may be a natural characteristic of all or part of ...
, linear, long and sharply pointed. The flowers are borne in leaf axils in groups of mostly three on a short peduncle with small
bract In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of ...
s and egg-shaped
bracteoles In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of ...
less than half as long as the
sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...
s. The
sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...
s are about long and the petals white and about long, forming a tube with lobes shorter than the sepals and with the ends rolled under. The fruit is an almost spherical
drupe In botany, a drupe (or stone fruit) is an indehiscent fruit in which an outer fleshy part (exocarp, or skin, and mesocarp, or flesh) surrounds a single shell (the ''pit'', ''stone'', or '' pyrena'') of hardened endocarp with a seed (''kernel'') ...
about long.


Taxonomy

''Leucopogon glaucifolius'' was first formally described in 1903 by
William Vincent Fitzgerald William Vincent Fitzgerald, (21 July 1867 – 6 August 1929) was an Australian botanist. He described five genera and about 210 species of plants from Western Australia, including 33 ''Acacia'' and several ''Eucalyptus'' species. He also collect ...
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 ...
'' from specimens collected near
Midland Junction Midland is a suburb in the Perth metropolitan region, as well as the regional centre for the City of Swan local government area that covers the Swan Valley and parts of the Darling Scarp to the east. It is situated at the intersection of Gr ...
in 1902. 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 ...
(''glaucifolius'') means "
glaucous ''Glaucous'' (, ) is used to describe the pale grey or bluish-green appearance of the surfaces of some plants, as well as in the names of birds, such as the glaucous gull (''Larus hyperboreus''), glaucous-winged gull (''Larus glaucescens''), g ...
-leaved".


Distribution

This leucopogon occurs in the
Geraldton Sandplains Geraldton (Wajarri: ''Jambinu'', Wilunyu: ''Jambinbirri'') is a coastal city in the Mid West region of the Australian state of Western Australia, north of the state capital, Perth. At June 2018, Geraldton had an urban population of 37,648. ...
,
Jarrah Forest Jarrah forest is tall open forest in which the dominant overstory tree is ''Eucalyptus marginata'' (jarrah). The ecosystem occurs only in the Southwest Botanical Province of Western Australia. It is most common in the biogeographic region named in ...
and
Swan Coastal Plain The Swan Coastal Plain in Western Australia is the geographic feature which contains the Swan River as it travels west to the Indian Ocean. The coastal plain continues well beyond the boundaries of the Swan River and its tributaries, as a geol ...
bioregions of south-western Western Australia.


References

{{Taxonbar, from=Q17243855 glaucifolius Ericales of Australia Flora of Western Australia Plants described in 1903 Taxa named by William Vincent Fitzgerald