Calytrix merralliana is a species of flowering plant in the myrtle family Myrtaceae and is endemic to inland areas of Western Australia. It is a glabrous shrub with linear to elliptic leaves and violet flowers with about 45 to 55 yellow stamens in several rows.
Calytrix merralliana is a glabrous shrub that typically grows to a height of up to . Its leaves are linear to elliptic, long and wide on a petiole long. There are stipules up to long at the base of the petiole. The flowers are borne on a peduncle long with more or less round bracteoles long but that fall off as the flowers open. The floral tube is long and has 10 ribs. The sepals are fused at the base, with egg-shaped to broadly egg-shaped lobes long and wide. The petals are violet, egg-shaped to elliptic, long and wide, and there are about 45 to 55 yellow stamens in several rows, and that turn reddish purple as they age. Flowering occurs from October to December.[1]
This species was first formally described in 1896 by Ferdinand von Mueller and Ralph Tate, who gave it the name Lhotskya violacea var. merralliana in Transactions, proceedings and report of the Royal Society of South Australia.[2] [3] In 1987, Lyndley Craven transferred the variety to Calytrix as C. merralliana in the journal Brunonia.[4] The specific epithet (merralliana) honours Edwin Merrall, (spelt "Merell" in Mueller's and Tate's paper, but "Merall" on the type specimens held in the National Herbarium of Victoria).[5]
Calytrix merralliana grows on yellow sand and gravelly sand between the Southern Cross-Kalgoorlie districts and Lake Cronin in the Coolgardie and Mallee bioregions of inland Western Australia.