Conospermum petiolare is a species of flowering plant in the family Proteaceae and is endemic to the south of Western Australia. It is a tufted subshrub or shrub with dense, erect, narrowly oblong leaves, and panicles of velvety cream-coloured, orange-yellow or pink, tube-shaped flowers, the fruit a hairy, brownish-yellow to gold-coloured nut.
Conospermum petiolare is a tufted subshrub or shrub that typically grows to a height of . It has dense, erect, narrowly oblong leaves, long and wide on a petiole long. The flowers are arranged in racemose panicles up to long, with heads of 3 to 7 flowers. The heads are borne on the ends of branches in a dense panicle on a silky-hairy peduncle long. There are hairy, broadly egg-shaped bracteoles long and wide on the peduncle. The flowers are cream-coloured, orange-yellow or pink, and form a tube long with narrowly linear lobes long and wide. Flowering occurs from October to January, and the fruit is a woolly hairy, brownish-yellow to gold-coloured nut about long and wide.[1]
Conospermum petiolare was first formally described in 1830 by Robert Brown in his Supplementum primum prodromi florae Novae Hollandiae.[2] [3] The specific epithet (petiolare) means 'borne on a petiole'.[4]
This species of Conospermum is found on rocky slopes and winter wet areas in the Esperance Plains, Jarrah Forest and Warren bioregions, and is common between the Stirling Range and Fitzgerald River National Park of southern Western Australia, where it grows in sandy soils over granite or quartzite.