''Hibbertia papillata'' is a species of flowering plant in the family
Dilleniaceae
Dilleniaceae is a family of flowering plants with 11 genera and about 430 known species. Such a family has been universally recognized by taxonomists. It is known to gardeners for the genus ''Hibbertia'', which contains many commercially valuabl ...
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
Fitzgerald River National Park
Fitzgerald River National Park is a national park in the Shires of Ravensthorpe and the Jerramungup in Western Australia, southeast of Perth. The park is recognised on Australia's National Heritage List for its outstanding diversity of native ...
in Western Australia. It is an erect shrub with crowded, linear, hairy leaves and yellow flowers usually with ten
stamen
The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10
Morphology and terminology
A stamen typically consists of a stalk called the filame ...
s, all on one side of, and curving over two hairy
carpels
Gynoecium (; ) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds. The gynoecium is the innermost whorl of a flower; it consists of (one or more) ''pistils'' ...
.
Description
''Hibbertia papillata'' is an erect shrub that typically grows to a height of , its young branchlets moderately covered with minute, star-shaped hairs. The leaves are hairy, more or less crowded, linear, long, about wide on a
petiole long with the edges rolled under and covering most of the lower surface. The flowers are arranged singly in leaf axils near the ends of branches on
pedicels
In botany, a pedicel is a stem that attaches a single flower to the inflorescence. Such inflorescences are described as ''pedicellate''.
Description
Pedicel refers to a structure connecting a single flower to its inflorescence. In the absenc ...
long with narrow triangular
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 long at the base of the sepals. The five
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 egg-shaped, long with star-shaped hairs on the outside. The five petals are yellow, egg-shaped with the narrower end towards the base and long with a small notch at the tip. There are usually ten stamens arranged on one side of, and curving over two hairy carpels that each contain two
ovule
In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (or remnant of the megasporangium), and the fe ...
s. Flowering occurs from September to October.
Taxonomy
''Hibbertia papillata'' was first formally described in 2004 by
Judith R. Wheeler in the journal ''
Nuytsia
''Nuytsia floribunda'' is a hemiparasitic tree found in Western Australia. The species is known locally as moodjar and, more recently, the Christmas tree or Western Australian Christmas tree. The display of intensely bright flowers during the ...
'' from specimens she collected on the south-east slopes of
East Mount Barren
East Mount Barren is a quartzite peak of the Barren Range in Fitzgerald River National Park. It was sighted and named by explorer Matthew Flinders on 6 January 1802, together with two other peaks in the range, West Mount Barren and Middle Mount B ...
in 1986.
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 ...
(''papillata'') refers to the minute pimples on the upper surface of the leaves.
Distribution and habitat
This hibbertia is only known from the Fitzgerald River National Park where it grows in low heath on ridges and slopes.
Conservation status
''Hibbertia papillata'' is classified as "
Priority Two" 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 ...
meaning that it is poorly known and from only one or a few locations.
See also
*
List of ''Hibbertia'' species
References
{{Taxonbar, from= Q17395345
papillata
Flora of Western Australia
Plants described in 2004