Penaea mucronata is a rounded shrub that grows up to 1,3 m tall. It is found in the fynbos from the Cape Peninsula eastwards along the coast and nearby inland mountain ranges of the Western Cape. The woody base resprouts after fires. Leaves are arranged in four overlapping ranks up the many erect stems. The short flower spikes on the branch tips are yellow, darkening to orange or brick red when older. Some of the flowers in the western parts, on the Peninsula are said to be darker than the rest (Bean and John, 2005; mcsa.briefyourmarket.com; Manning, 2007).