Botanists are six varieties within the species:
-Adiantum reniforme var. reniforme, growing in Madeira, the Canary Archipelago and the islands of Cape Verde;
-Adiantum reniforme var. pusillum, a dwarf variety endemic to the Canaries, who lives in all the islands except Lanzarote and Fuerteventura;
-Adiantum reniforme var. asarifolium, a rare hairy version with thick black margins and large sori, found in Madagascar, Mauritius, Réunion, South Africa, Kenya, Malawi, Gambia and Senegal;
-Adiantum reniforme var. hydrocotyloides, exclusive of the island of Réunion;
-Adiantum reniforme var. crenatum, which lives only in Madagascar;
-Adiantum reniforme var. sinense, which grows only in China and is in serious danger of extinction, with only four small populations known in the region of the Three Gorges of the Yangtze River, between the province of Sichuan and the province of Hubei, a place regarded as a refuge of plants that survived to Quaternary glaciations.