''Cassinia denticulata'', commonly known as stiff cassinia, is a species of flowering plant in the family Asteraceae and is endemic to eastern New South Wales. It is a shrub with yellowish stems, finely-toothed, egg-shaped to elliptic leaves, and

heads A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste. Some very simple animals may no ...

of pale yellow flowers arranged in a dense corymb.

Description

''Cassinia denticulata'' is a shrub that typically grows to a height of and has yellowish stems loosely covered with glandular hairs. The leaves are egg-shaped to elliptic, long and wide with finely-toothed edges. The upper surface of the leaves is glossy dark green and sticky, the lower surface paler and covered with sticky hairs. The flower heads are long and wide, each with twelve to fourteen pale yellow florets surrounded by four or five rows of

involucral bracts 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, ...

. The heads are arranged in a dense corymb of florets. Flowering occurs from spring to early summer and the achenes are about long with a pappus long.Les Robinson - Field Guide to the Native Plants of Sydney, page 133

Taxonomy and naming

''Cassinia denticulata'' was first formally described in 1818 by Robert Brown in '' Transactions of the Linnean Society of London''. 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 ...

means "finely toothed".

Distribution and habitat

Stiff cassinia grows in heath and woodland on sandstone and sandy soils, mainly from the Hawkesbury River to Fitzroy Falls including the Sydney area and the Blue Mountains.

References

{{Taxonbar, from=Q5049444 denticulata Asterales of Australia Flora of New South Wales Taxa named by Robert Brown (botanist, born 1773) Plants described in 1818