''Hibbertia hendersonii'' 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 the
Blackdown Tableland in Queensland. It is an erect shrub with densely hairy foliage, narrow elliptic leaves, and yellow flowers, each usually with twenty to thirty-one
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 arranged on one side of the two
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 hendersonii'' is a shrub that typically grows to a height of up to , its branches and leaves densely covered with fine, long hairs. The leaves are narrow elliptic, long and wide on a
petiole up to long. The flowers are borne singly in leaf axils or on the ends of branchlets and are
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 ...
and in diameter. There are as many as twenty-one flowers on each branchlet. Each flower has narrow egg-shaped
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. The two outer
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 ...
lobes are long and densely hairy, the three inner ones broader, slightly longer and
glabrous. The five petals are egg-shaped with the narrower end towards the base, yellow, long and there are usually twenty to thirty-one stamens free from each other and arranged on one side of the two carpels, each carpel with ten to twelve
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.
Taxonomy
''Hibbertia hendersonii'' was first formally described in 1991 by
Sally T. Reynolds
Sally T. Reynolds (born 1932) is an Australian botanist. She worked at the Queensland Herbarium as principal botanist and as a specialist on Australian Sapindaceae. Paul Irwin Forster, Paul Forster named ''Synima reynoldsiae'' in recognition of ...
in the journal ''
Austrobaileya'' from specimens collected on the Blackdown Tableland in 1971.
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 ...
(''hendersonii'') honours
Rodney John Francis Henderson
Rodney John Francis Henderson (born 1938) is an Australian botanist, specialising in taxonomy who worked for more than 48 years for the Queensland Public Service, 41 of those years at the Queensland Herbarium until he retired in 2002. The famili ...
, one of the collectors of the
type specimens.
Distribution and habitat
This hibbertia grows in forest at altitudes from and is common on the Blackdown Tableland in central Queensland.
Conservation status
''Hibbertia hendersonii'' is classified as of "least concern" under the Queensland Government ''
Nature Conservation Act 1992
The ''Nature Conservation Act 1992'' is an act of the Parliament of Queensland, Australia, that, together with subordinate legislation, provides for the legislative protection of Queensland's threatened biota.
As originally published, it prov ...
''.
See also
*
List of ''Hibbertia'' species
References
{{Taxonbar, from=Q17395179
hendersonii
Flora of Queensland
Plants described in 1991