''Cassinia aureonitens'', commonly known as the yellow cassinia
is a species of flowering plant in the family
Asteraceae
Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...
and is
endemic
Endemism is the state of a species being found only 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 foun ...
to eastern New South Wales. It is a shrub with elliptic leaves and
heads of yellow flowers arranged in dense
corymb
Corymb is a botanical term for an inflorescence with the flowers growing in such a fashion that the outermost are borne on longer pedicels than the inner, bringing all flowers up to a common level. A corymb has a flattish top with a superficial re ...
s.
Description
''Cassinia aureonitens'' is a shrub that typically grows to a height of , its branches covered with
glandular
A gland is a cell or an organ in an animal's body that produces and secretes different substances that the organism needs, either into the bloodstream or into a body cavity or outer surface. A gland may also function to remove unwanted substance ...
hairs. The leaves are elliptic, long and wide, dark green on the upper surface and paler below. The flower heads are long and about in diameter, each with five or six yellow
florets
This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary ...
surrounded by four or five overlapping
whorls
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
In nature
File:Photograph and axial plane floral diagram ...
of
involucral bracts
In botany, a bract is a modified or specialized leaf, associated with a reproductive structure such as a flower, inflorescence axis or cone scale.
Bracts are usually different from foliage leaves in size, color, shape or texture. They also look ...
. The heads are arranged in a dense corymb up to in diameter. Flowering occurs in spring and summer and the
achenes
An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not open ...
are about long with a
pappus about long.
Taxonomy
Yellow cassinia was first formally described in 1818 by
Robert Brown Robert Brown may refer to: Robert Brown (born 1965), British Director, Animator and author
Entertainers and artists
* Washboard Sam or Robert Brown (1910–1966), American musician and singer
* Robert W. Brown (1917–2009), American printmaker ...
and given the name ''Cassinia aurea'' in the ''
Transactions of the Linnean Society of London
The Linnean Society of London is a learned society dedicated to the study and dissemination of information concerning natural history, evolution, and taxonomy. It possesses several important biological specimen, manuscript and literature collec ...
'',
but the name was
illegitimate
Legitimacy, in traditional Western common law, is the status of a child born to parents who are legally married to each other, and of a child conceived before the parents obtain a legal divorce.
Conversely, ''illegitimacy'', also known as ''b ...
because Brown had used the same name in 1813 for a different species now known as ''
Angianthus tomentosus
''Angianthus'' is a genus of flowering plants in the family Asteraceae.Wendland, Johann Christoph. 1810.Collectio Plantarum 2(2): 31 All species of this genus are endemic to Australia.
Taxonomy
The genus was first described by Johann Christoph ...
''.
In 1951
Norman Arthur Wakefield
Norman Arthur Wakefield (28 November 1918 – 23 September 1972) was an Australian teacher, naturalist, paleontologist and botanist, notable as an expert on ferns. He described many new species of plants.
Wakefield was born in Romsey, Victoria, ...
designated the name ''Cassinia aureonitens'' for this species, publishing the new name in ''
The Victorian Naturalist
''The Victorian Naturalist'' is a bimonthly scientific journal covering natural history, especially of Australia. It is published by the Field Naturalists Club of Victoria and is received as part of the membership subscription of that club. From ...
''.
Distribution and habitat
''Cassinia aureonitens'' grows in heath and woodland on the coast of New South Wales between
Taree
Taree () is a city on the Mid North Coast, New South Wales, Australia. It and nearby Cundletown were settled in 1831 by William Wynter. Since then it has grown to a population of 26,381, and commands a significant agricultural district. Situ ...
and
Eden and inland to the
Central Tablelands
The Central Tablelands in New South Wales is a geographic area that lies between the Sydney Metropolitan Area and the Central Western Slopes and Plains. The Great Dividing Range passes in a north–south direction through the Central Tablelands ...
.
References
{{Taxonbar, from=Q15560496
aureonitens
Asterales of Australia
Flora of New South Wales
Plants described in 1818
Taxa named by Robert Brown (botanist, born 1773)