LE ROUX, M. Marianne; MANNING, J.C. A new long-tubed subspecies of Pelargonium dipetalum (section Hoarea) (Geraniaceae) from the Albertinia-Swellendam area in Western Cape. African Biodiversity & Conservation, [S. l.], v. 44, n. 1, 2014. Disponível em: https://www.abcjournal.org/index.php/abc/article/view/182. Acesso em: 10 oct. 2025.