The genus Trichodiadema belongs to the family Aizoaceae. Originally, the approximately 30 species are found in South Africa and Namibia. The genus is closely related to the genus Delosperma.
Trichodiadema plants are dwarf shrubs that can reach a height of 3 cm to 60 cm. The roots are often woody or tuberous. The leaves usually grow rosette-shaped on the shoots and have spines arranged in a star shape at the tip. The flowers are white, yellow, red or pink.