It is a small, erect or low spreading shrub with narrow, linear leaves and cylindrical yellow flowers arranged singly or in groups of up to three in leaf axils.

The central style is surrounded by four yellow anthers which are attached to the tepals with tips rolled back, so that they resembles a cross when viewed end-on.

[2][3] Persoonia sulcata was first formally described in 1856 by Carl Meissner and the description was published in Prodromus Systematis Naturalis Regni Vegetabilis.

These two populations are in the Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest and Swan Coastal Plain biogeographic regions.

[2][7] Persoonia sulcata is classified as "Priority Four" by the Government of Western Australia Department of Parks and Wildlife,[7] meaning that is rare or near threatened.