Scaevola filifolia, also known as thread-leaved Diaspasis, is a species of flowering plant in the family Goodeniaceae and is endemic to the south of Western Australia. It is a low shrub with fine, fleshy leaves and white or pink flowers
Description Scaevola filifolia is an erect or ascending perennial shrub that typically grows to a height of and wide. The leaves are linear, thick, sometimes toothed, up to long and wide, light green and fleshy. Abundant white or pink flowers are borne from October to February on a peduncle long, with leaf-like bracts and linear bracteoles long. The sepals are triangular, long, the petals long with lobes up to long and rounded wings up to long. The fruit is elliptic, long.
Taxonomy and naming This species was first formally described in 1810 by Robert Brown who gave it the name Diaspasis filifolia in his Prodromus Florae Novae Hollandiae. In 2020, Kelly Anne Shepherd transferred the species to Scaevola as S. filifolia, and the change is accpted by the Australian Plant Census. The specific epithet (filifolia) means 'thread-leaved'.
Distribution and habitat This species of Scaevola grows in bogs and winter-wet areas in the Jarrah Forest, Swan Coastal Plain and Warren bioregions of southern Western Australia.
Conservation status Scaevola filifolia is listed as 'not threatened by the Western Australian Government Department of Biodiversity, Conservation and Attractions.
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