Pimelea longiflora

Pimelea longiflora is an erect, spindly shrub that typically grows to a height of 0.3–1.3 m (1 ft 0 in – 4 ft 3 in) and has densely hairy young stems. The leaves are linear to narrowly elliptic, 4–18 mm (0.16–0.71 in) long and 1–3 mm (0.039–0.118 in) wide on a short petiole. The flowers are arranged in erect clusters of many flowers on a peduncle 2–20 mm (0.079–0.787 in) long, surrounded by 4 to 6 egg-shaped or narrowly egg-shaped involucral bracts that are 5–12 mm (0.20–0.47 in) long and 1.5–3 mm (0.059–0.118 in) wide. Each flower is on a pedicel 0.4–0.5 mm (0.016–0.020 in) long, the floral tube 7–12 mm (0.28–0.47 in) long, and the sepals 5–6 mm (0.20–0.24 in) long. Flowering occurs from August to February.^[2][3][4]

Pimelea longiflora was first formally described in 1810 by Robert Brown in his book Prodromus Florae Novae Hollandiae et Insulae Van Diemen.^[5][6] The specific epithet (longiflora) means "long-flowered".^[7]

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.^[2][3]

Pimelea longiflora is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.^[3]