The genus Bidens ... by Earl Edward Sherff.

v.16:pt.2(1937)

Contributions to the flora of South America: Studies on Andean Compositae, I. Studies in South American plants, II.

v.27:no.1(1950)

Flora of Costa Rica ... by Paul C. Standley ...

v.18:pt.1(1937)

The forests and flora of British Honduras / by Paul C. Standley and Samuel J. Record ; in cooperation with the Conservator of Forests and the Agricultural Officer of the Colony.

v.12(1936)

Publications of Field Museum of Natural History.

Fieldiana. Botany series v. 11, index

The genus Bidens ... by Earl Edward Sherff.

v.16:pt.1(1937)

Studies of American plants. by Paul C. Standley.

v.17:no.2(1937)

Woods of northeastern Peru, by Llewelyn Williams.

v.15(1936)

Flora of Peru / by Mildred E. Mathias and Lincoln Constance.

v.13:pt:5A:no.1 (1962) [Umbelliferae]

Spermatophytes, mostly Peruvian. by J. Francis Macbride.

v.11:no.2(1931)

Revision of the Hawaiian members of the genus Tetraplasandra A. Gray.

v.29:no.2(1955)

Revision of the genus Coreopsis, by Earl Edward Sherff.

v.11:no.6(1936)

The Rubiaceae of Colombia, by Paul C. Standley.

v.7:no.1(1930)

Revision of the North American species of Xanthium, by Charles Frederick Millspaugh and Earl Edward Sherff.

v.4:no.2(1919)

Mosses of Guatemala / Edwin B. Bartram.

v.25(1949)