Xanthosia tomentosa, common name Lesueur Southern Cross, is a species of plant in the family Apiaceae. It is endemic to Western Australia.
This plant was first described by Alex George in 1968. There are no synonyms for the plant.[1]
Xanthosia tomentosa is a prostrate to ascending perennial herb, which grows from 20 cm to up to 90 cm high (occasionally) on lateritic gravelly soils. It flowers from September to December in its native habitat. It is found in the IBRA regions of the Geraldton Sandplains and the Swan Coastal Plain.