Bossiaea scolopendria, commonly known as plank plant, is a species of flowering plant in the family Fabaceae and is endemic to New South Wales. It is an erect, sparsely-branched shrub with flattened branches, ending in winged cladodes, the leaves mostly reduced to small scales except on the youngest branches, and yellow and red flowers. Description Bossiaea scolopendria is an erect, sparsely-branched shrub that typically grows to a height of up to or more. The branches are flattened and end in winged cladodes wide. Leaves are only present on young growth and are soon replaced by scales long and wide. The flowers are borne in up to thirty nodes on the sides of cladodes, each flower long on a pedicel long. There are two scales and one or a few bracts long at the base and bracteoles about long near the middle of the pedicel. The five sepals are long and joined at the base forming a tube, the upper lobes long and wide, the lower lobes long. The standard petal is yellow with a red base and up to about long, the wings are purplish brown and wide, and the keel is pale greenish yellow and wide. Flowering mainly occurs from August to September and the fruit is an oblong pod long. Taxonomy Plank plant was first formally described in 1801 by Henry Cranke Andrews who gave it the name Platylobium scolopendrium in his book, The Botanist's Repository for New, and Rare Plants. In 1808, James Edward Smith changed the name to Bossiaea scolopendria in Transactions of the Linnean Society of London. Distribution and habitat Bossiaea scolopendria grows in heathland and forest on sandstone in near-coastal areas of central and southern New South Wales. References scolopendria Mirbelioids Flora of New South Wales Plants described in 1808 Taxa named by Henry Cranke Andrews