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.##plugins.facebook.comentarios##
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