Pteridophyta of Peru. Part V. 18. Aspleniaceae-21. PolypodiaceaePublished in Fieldiana Botany, in 1993, in volume 32, pages 1-190Flora Costaricensis. Family #202 RubiaceaePublished in Fieldiana Botany, in 1993, in volume 33, pages 1-333
Flora Costaricensis. Family #202 RubiaceaePublished in Fieldiana Botany, in 1993, in volume 33, pages 1-333