Guichenotia quasicalva is a species of flowering plant in the family Malvaceae and is endemic to the south-west of Western Australia. It is a low, spindly shrub with narrowly egg-shaped to linear leaves and pink flowers in groups of two to four.
Guichenotia quasicalva is a spindly shrub that typically grows to high and wide, its new growth covered with golden, star-shaped hairs. Its leaves are narrowly egg-shaped to linear, long and wide on a petiole long with stipules long at the base. The edges of the leaves are turned down, and both surface are sparsely covered with star-shaped hairs. The flowers are arranged in cymes of two to four, each flower in diameter on a peduncle long. Each flower is on a pedicel long with bracts long and bracteoles about long. The petal-like sepals are pink, joined at the base and glabrous inside, the outer surface covered with scattered, star-shaped hairs. There are tiny, deep red petals but no staminodes. Flowering occurs in September and October.[1]
Guichenotia quasicalva was first formally described in 2003 by Carolyn F. Wilkins and the description was published in Australian Systematic Botany.[2] The specific epithet (quasicalva) means "almost bald", referring to the sparse covering of hairs on the stems, leaves and sepals.[3]
This species of guichenotia grows in wet-wet places and near creeks in dense shrubland and open mallee in three populations near Eneabba in the Avon Wheatbelt and Geraldton Sandplains bioregions of south-western Western Australia.[1]
Guichenotia quasicalva is listed as "Priority Two" by the Western Australian Government Department of Biodiversity, Conservation and Attractions, meaning that it is poorly known and from only one or a few locations.[4]