Siemensia is a monotypic genus of flowering plants belonging to the family Rubiaceae.[1] It only contains one known species, Siemensia pendula (C.Wright ex Griseb.) Urb.
Its native range is western Cuba.
The genus name of Siemensia is in honour of Werner von Siemens (1816–1892), a German electrical engineer, inventor and industrialist. Siemens's name has been adopted as the SI unit of electrical conductance, the siemens. He founded the electrical and telecommunications conglomerate Siemens.[2] The Latin specific epithet of pendula means hanging.[3] Both the genus and the species were first described and published in Symb. Antill. Vol.9 on page 143 in 1923.[1]