Pimelea longiflora is a species of flowering plant in the family Thymelaeaceae and is endemic to the southwest of Western Australia. It is an erect, spindly shrub with linear to narrowly elliptic leaves and erect clusters of white to cream-coloured flowers, surrounded by 4 to 6 green, egg-shaped involucral bracts. Description Pimelea longiflora is an erect, spindly shrub that typically grows to a height of and has densely hairy young stems. The leaves are linear to narrowly elliptic, long and wide on a short petiole. The flowers are arranged in erect clusters of many flowers on a peduncle long, surrounded by 4 to 6 egg-shaped or narrowly egg-shaped involucral bracts that are long and wide. Each flower is on a pedicel long, the floral tube long, and the sepals long. Flowering occurs from August to February. Taxonomy Pimelea longiflora was first formally described in 1810 by Robert Brown in his book Prodromus Florae Novae Hollandiae et Insulae Van Diemen. The specific epithet (longiflora) means "long-flowered". Distribution and habitat This pimelea usually grows in swampy, winter-wet places in sand or sandy clay, mainly between Bunbury and Cape Riche, with a disjunct population in the Fitzgerald River National Park, in the Avon Wheatbelt, Esperance Plains, Jarrah Forest, Swan Coastal Plain and Warren bioregions of south-western Western Australia. Conservation status Pimelea longiflora is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions. References longiflora Malvales of Australia Taxa named by Robert Brown (botanist, born 1773) Plants described in 1810 Flora of Western Australia