Gardère, M.L., J. Florence, S. Muller, Y. Savriama & J.-Y. Dubuisson (2021). Codonographia Gorgonum, or the description of a pleiad of bellflowers (Campanula, Campanulaceae) from the Cabo Verde archipelago. Candollea 76: 13–40. In English, English and Portuguese abstracts.

The previous taxonomic study of Cabo Verdean bellflowers (Campanula L., Campanulaceae) recognized four endemic species. In light of a recently published geometric morphometric study, the reassessment of the Campanula jacobaea complex allows to restrict Campanula jacobaea C. Sm. ex Webb to the island of Santiago. A new lectotype is proposed for this name that conforms to the protologue. Three further new species are described: Campanula monteverdensis Gardère from São Vicente, Campanula fransinea Gardère and Campanula cochleromena from São Nicolau, and Campanula vicinituba Gardère from Santo Antão. Campanula hortelensis Gardère, also from Santo Antão is placed in synonym of Campanula feijoana Gardère. Seven species are recognized in the Cabo Verde archipelago including Campanula bravensis (Bolle) A. Chev., the most widespread bellflower occurring in all southern mountainous islands. A determination key, descriptions, photographs and a distribution map are provided.