Three new species of Gasteranthus (Gesneriaceae) from Ecuador

The gesneriad flora of the Reserva Rio Guajalito, Province of Pichincha, an d Bosque Protector Otonga, Province of Cotopaxi, Ecuador have been investig ated. Three new species, Gasteranthus aurantiacus M. Freiberg, G. atrolimbu s M. Freiberg, and G, acuticarinatus M. Freiberg, are described and illustr ated in preparation for a contribution for the Gesneriaceae in the Flora of Ecuador. While both G. acuticarinatus and G. atrolimbus are characterized by a dorsal keel on a tubular, pink to wine-red corolla, the infundibulate, bright orange-colored corolla of G, aurantiacus has a rather wide opening and a large limb.