Contribuciones a la Pteridología costarricense. I. Nuevas especies

Abstract

Four new species of vascular cryptogams from Costa Rica are described, three ferns: Hymenophyllum (Sphaerocionium) saenzianum, Thelypteris villana, Polypodium (Goniophlebium) rodriguezianum, and one quillwort: Isoëtes tryo­niana. The affinities of the new species are discussed.