Published in Botanical Museum Leaflets, Harvard University, in 1955, in volume 17, pages 37-64
PLANTAE COLOMBIANAE XIII: DE PLANTIS PRINCIPALITER COLOMBIAE AMAZONICAE NOTAE DIVERSAE SIGNIFICANTES
Published in Botanical Museum Leaflets, Harvard University, in 1955, in volume 17, pages 65-100
Published in Botanical Museum Leaflets, Harvard University, in 1955, in volume 17, issue 4, pages 1-11
Published in Botanical Museum Leaflets, Harvard University, in 1955, in volume 17, issue 4, pages 12-24
Published in Botanical Museum Leaflets, Harvard University, in 1955, in volume 17, issue 4, pages 27-36