Conospermum quadripetalum is a species of flowering plant in the family Proteaceae and is endemic to the south of Western Australia. It is a diffuse, straggly shrub with hooked leaves, circular in cross section, and panicles of blue, tube-shaped flowers with white and red hairs.
Conospermum quadripetalum is a spreading, loose shrub that typically grows to a height of up to . Its leaves are long, wide and circular in cross section with a hooked tip. The flowers are arranged in panicles, each branch on a peduncle long,with two to six flowers on the end. The bracteoles are greenish-blue, long and wide and hairy. The flowers are blue or white form a tube long, covered with woolly, white and red hairs. The perianth lobes are more or less equal, long and wide. Flowering occurs in September and November.[1]
Conospermum quadripetalum was first formally described in 1995 by Eleanor Marion Bennett in the Flora of Australia from specimens she collected near the Scott River Road in 1985.[2] The specific epithet (quadripetalum) means 'four-petalled', referring to the petal lobes that are almost equal.[3]
This species of Conospermum is found on flats behind coastal hills along the south coast in the Jarrah Forest and Warren bioregions of Western Australia, where it grows in sandy-clay soils.
Conospermum quadripetalum is listed as "Threatened Flora (Declared Rare Flora — Extant)" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.[4]