About Cassinia denticulata R.Br.
Cassinia denticulata R.Br., commonly called stiff cassinia, is a shrub that typically grows 0.7 to 2 meters (2 feet 4 inches to 6 feet 7 inches) tall. It has yellowish stems that are loosely covered in glandular hairs. Its leaves range from egg-shaped to elliptic, measuring 8 to 25 millimeters (0.31 to 0.98 inches) long and 3 to 6 millimeters (0.12 to 0.24 inches) wide, with finely toothed edges. The upper leaf surface is glossy dark green and sticky, while the lower surface is paler and covered in sticky hairs. Its flower heads are 2 to 4 millimeters (0.079 to 0.157 inches) in both length and width; each head holds 12 to 14 pale yellow florets, surrounded by four or five rows of involucral bracts. The flower heads are arranged in a dense corymb of florets. Flowering takes place from spring to early summer, and the resulting achenes are around 0.6 millimeters (0.024 inches) long, with a pappus that is 2 to 2.5 millimeters (0.079 to 0.098 inches) long. This species grows in heath and woodland on sandstone and sandy soils. It is found mainly between the Hawkesbury River and Fitzroy Falls, including the Sydney area and the Blue Mountains.
