This work is a taxonomic study of Nidularium species in Paraná State. The genus is represented by six species, three varieties and one form: N. billbergioides (Schult. f.) L. B. Sm. f. billbergioides; N. campo-alegrense Leme; N. exostigmum Tardivo; N. gracile Tardivo; N. innocentii Lem. var. innocentii, N. innocentii war. paxianum (Mez) L. B. Sm.; N.innocentii var. wittmackianum (Harms) L. B. Sm. e N. procerum Lindman. Identification keys, descriptions, illustrations and geographical distribuiton of the taxa studied are presented.
Nidularium; Bromeliaceae; taxonomy