It is a perennial plant that is densely branched and bushy, about 400 mm high. The leaves are somewhat fleshy, frequently speckled with red hues. A line of rounded pearl-like hairs on the margins give leaves a silvery edge. There are also small hairs that point downwards on the immature stems that feature a silvery tinge. The leaves are opposite, and are thickly ordered in regular rows on the stems.[3]
Inflorescences
The flowers are white that tend to be hinted with pink or red sepals, with red ovaries coloring the center of the flowers, and red anthers that turn golden. The flowers are sorted in cloaked clusters, jammed at the branches' ends, with nectar that exudes a distinguishing scent. The flowers become small capsules (fruit), each comprising many very small seeds.[3]
Habitat
Crassula undulata grows on south or south-west facing slopes or in gorges, rock outcrops, ledges or rock crannies in the Riviersonderend Mountains adjacent to Stellenbosch in South Africa's Western Cape, which is northwards from the Cederberg mountains. The species is also present in Fynbos and the Succulent Karoo region.[3]