The three new species are narrow-range endemics: Selaginella caluffii is restricted to Topes de Collantes and its surroundings (Alturas de Trinidad, central Cuba), S. ivanii is only known from Pico San Juan (same area) and S. achotalensis occurs on the Mogotes de Yambeque and their neighbourhood (Monte Rus, Guantanamo province, eastern Cuba). All are described and illustrated. The two central Cuban species are the second and third known Cuban representatives of the articulate selaginellas, S. subg. Stachygynandrum.
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