Nasa is the largest genera in the Loasaceae family and it is particularly speciose in the Amotape-Huancabamba Zone of northern Peru. Nasa ser. Carunculatae is a group of four species, three of them endemic to the Amotape- Huancabamba Zone. Species in this group are characterized by their shrubby habit, deciduous leaves, and typical tilt-revolving flowers with white to greenish petals. In this work, we describe a new species of Nasa ser. Carunculatae from the southern limit of Amotape-Huancabamba area, La Libertad, Peru. The species differs from others in having much smaller and notably narrower leaves. Unlike all the other species of ser. Carunculatae, the entire distal portion of the stem is densely glandular. It is apparently most closely related to Nasa carunculata, a species known from inter-Andean valleys of Ancash and Ayacucho.

Nasa is the largest genera in the Loasaceae family and it is particularly speciose in the Amotape-Huancabamba Zone of northern Peru. Nasa ser. Carunculatae is a group of four species, three of them endemic to the Amotape- Huancabamba Zone. Species in this group are characterized by their shrubby habit, deciduous leaves, and typical tilt-revolving flowers with white to greenish petals. In this work, we describe a new species of Nasa ser. Carunculatae from the southern limit of Amotape-Huancabamba area, La Libertad, Peru. The species differs from others in having much smaller and notably narrower leaves. Unlike all the other species of ser. Carunculatae, the entire distal portion of the stem is densely glandular. It is apparently most closely related to Nasa carunculata, a species known from inter-Andean valleys of Ancash and Ayacucho.

In the present paper, the valid names of 101 taxa of new species, new subspecies and new combinations of the genera Nasa and Aosa (Loasaceae: Cornales) are published. The invalid names of these taxa were originally published in various articles in the last ten years. This publication is carried out on the basis of the changes in the International Code of Botanical Nomenclature approved in the International Botanical Congress (IBC) in Viena, 2005. For each taxon the valid names, protologue citation and type are provided, in the case of the 41 new species and subspecies a latin diagnosis is included, as per requirement ot the Code. We additionally provide the citation for the original, invalid publication and corresponding illustration of the taxon. The taxon list here provided represents a complete list of all taxa currently known in the genus Nasa, including the species recently validate...

En el presente trabajo publicamos los nombres válidos de 101 taxones asignados como nuevas especies, nuevos subgeneros y nuevas combinaciones en los géneros Nasa y Aosa (Loasaceae: Cornales). Los nombres invalidos fueron publicados en diversos artí- culos en los últimos diez años. Se hace esta publicación como consecuencia de los cambios en el Código Internacional de Nomenclatura Botánica adoptados recientemente por el International Botanical Congress (IBC) realizado en Viena, 2005. Para cada taxón se provee el nombre válido, protólogo del tipo, diagnosis en latín para las 41 especies o subespecies nuevas, la cita de la publicación original inválida y la cita donde se encuentran los dibujos respectivos. El listado de taxones para Nasa incluye todas las especies actualmente conocidas del género, incluyendo a las especies recientemente publicadas en TAXON.