About Serruria glomerata (L.) R.Br.
Serruria glomerata, commonly called the cluster spiderhead, is a flowering shrub in the genus Serruria that forms part of the fynbos vegetation. It is native to the Western Cape province of South Africa, where it grows on the Cape Flats and the Cape Peninsula. This erect shrub reaches only 40 centimeters in height, and produces flowers from August to October. In Afrikaans, this species is known by the name trosspinnekopbos.
For reproduction, fire will kill the adult plant, but its seeds survive the fire. Two months after flowering finishes, the fruit detaches from the plant, and ants disperse the seeds by storing them in their nests. This species is unisexual, and pollination is carried out by insects. It grows in sandy soil at altitudes ranging from 0 to 330 meters above sea level.