Stangeria eriopus is a cycad endemic to southern Africa. It is the sole species in the genus Stangeria, most closely related to the Australian genus Bowenia, with which it forms the family Stangeriaceae.

William Stanger was best known as a surveyor-general in the Cape Colony and the Colony of Natal, but was also a geologist, botanist and medical doctor. He was the son of Willam Stanger and Mary Dent. He studied medicine and natural science at Edinburgh University, and after returning from a trip to Australia and New Zealand, ran a practice in London for some time.