Boronia quadrilata

About

Boronia quadrilata is a species of plant in the citrus family Rutaceae and is endemic to a small area in the Northern Territory, Australia. It is an erect, glabrous shrub with simple, sessile, wedge-shaped leaves, pale yellow petals and green sepals that are longer and wider than the petals. It is only known from a population of about fifteen plants.

Summary from Wikipedia