About Hibbertia riparia (R.Br. ex DC.) Hoogland
Hibbertia riparia, commonly known as erect guinea-flower, is an erect to spreading shrub that typically grows up to 1.2 metres (3 feet 11 inches) tall, and has hairy foliage. Its leaves are linear, mostly 8–10 mm (0.31–0.39 in) long and 0.5–2 mm (0.020–0.079 in) wide, growing on a petiole that reaches up to 0.6 mm (0.024 in) in length. Flowers are mainly arranged in leaf axils or on the ends of short branches, are usually sessile, and have one to a few linear bracts 2.4–6.2 mm (0.094–0.244 in) long at the base. The five sepals are joined at the base, 6–12 mm (0.24–0.47 in) long, and differ in length from each other. The petals are yellow, egg-shaped with the narrower end pointing toward the base, and 6–12 mm (0.24–0.47 in) long. Six to sixteen stamens form a single cluster on one side of the two silky-hairy carpels. Flowering occurs from September to December. This species is found from south-eastern Queensland to Tasmania, extending west to the south-east of South Australia. It grows in a range of habitats from heathland to open forest. It is widespread in New South Wales, particularly along the coast and tablelands, throughout most of Victoria, in the south-east of South Australia, and in lowland areas of Tasmania.
