Cite

    Kristýna Hanušová et al.. “Widespread co-occurrence of multiple ploidy levels in fragile ferns (Cystopteris fragilis complex; Cystopteridaceae) probably stems from similar ecology of cytotypes, their efficient dispersal and inter-ploidy hybridization.” Annals of botany, vol. 123, 2019, pp. 845–855. http://access.bl.uk/ark:/81055/vdc_100092352266.0x000033