P. C.  Standley, ?Flora of the Panama Canal Zone?, Contributions from the United States National HerbariumContributions from the United States National Herbarium, vol. 27, pp. 179-182, 1928.

P. C.  Standley, ?Flora of Yucatan?, Publications of the Field Museum of Natural History. Botanical seriesPublications of the Field Museum of Natural History. Botanical series, vol. 3, pp. 266-268, 1930.

P. C.  Standley, ?Flora of the Lancetilla Valley, Honduras?, Publications of the Field Museum of Natural History. Botanical seriesPublications of the Field Museum of Natural History. Botanical series, vol. 10, pp. 194-197, 1931.

P. C.  Standley, ?Flora of Costa Rica, Part II?, Publications of the Field Museum of Natural History. Botanical seriesPublications of the Field Museum of Natural History. Botanical series, vol. 18, pp. 439-446, 1937.

P. C.  Standley and Record, S. J., ?The forests and flora of British Honduras?, Publications of the Field Museum of Natural History. Botanical seriesPublications of the Field Museum of Natural History. Botanical series, vol. 12, pp. 134-138, 1936.

P. C.  Standley and Steyermark, J. A., ?Flora of Guatemala?, Fieldiana. BotanyFieldiana. Botany, vol. 24, pp. 270-294, 1946.