''Hibbertia setifera'' is a species of flowering plant in the family
Dilleniaceae 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 south-eastern continental Australia. It is a small, grey shrub with erect to spreading branches, linear leaves and yellow flowers with eight or nine
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 in a single cluster on one side of 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 setifera'' is a greyish, erect to spreading shrub that typically grows to a height of up to and has softly-hairy branches. The leaves are linear, mostly long, wide and
sessile
Sessility, or sessile, may refer to:
* Sessility (motility), organisms which are not able to move about
* Sessility (botany), flowers or leaves that grow directly from the stem or peduncle of a plant
* Sessility (medicine), tumors and polyps that ...
or on a short, indistinct
petiole. The flowers are arranged singly on the ends of the main shoots and are more or less sessile with a few hairy, linear, leaf-like
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. 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 ...
are long and joined at the base, the outer lobes narrower than the inner ones. The five petals are yellow, long with eight or nine stamens in a single cluster on one side of the two hairy carpels, each carpel with four to six
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 mostly occurs from June to December.
Taxonomy
''Hibbertia setifera'' was first formally described in 2010 by
Hellmut R. Toelken in the ''
Journal of the Adelaide Botanic Gardens
The Adelaide Botanic Garden is a public garden at the north-east corner of the Adelaide city centre, in the Adelaide Park Lands. It encompasses a fenced garden on North Terrace, Adelaide, North Terrace (between Lot Fourteen, the site of the old ...
'' from specimens collected by
Hansjörg Eichler near
Kelly Hill Caves on
Kangaroo Island.
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 ...
(''setifera'') means "bristle-bearing" and refers mainly to the outer sepal lobes.
Distribution and habitat
This hibbertia is locally abundant in scrub or
mallee on Kangaroo Island, and is rarely recorded on the mainland of south-eastern South Australia and the far west of Victoria.
See also
*
List of ''Hibbertia'' species
References
{{Taxonbar, from=Q17395450
setifera
Flora of South Australia
Flora of Victoria (state)
Plants described in 2010
Taxa named by Hellmut R. Toelken