Sida spinosa is a perennial shrub that has several common names, including prickly sida, spiny fanpetals, and needle-leaf fanpetals. Other synonyms for sida spinosa include Malva spinosa, Sida carpinifolia, and Sida humilis. The plant is native to Central and South America, and its leaves and flowers have been used in traditional medicine for their anti-inflammatory and analgesic properties. Sida spinosa can grow up to 6 feet tall and produces pink or yellow flowers that bloom in the summer and fall. Its branches and leaves are covered in spiny hairs that can cause skin irritation, hence its common name prickly sida.