New species in the palm genus Syagrus Mart. / S.F. Glassman.

v.31:no.9(1967)

A new Eurystyles from Nicaragua [by] Alfonso H. Heller.

v.31:no.12(1968)

Tropical American plants, VI / Louis O. Williams.

v.31:no.2(1964)

Flora of Guatemala / by Paul C. Standley and Louis O. Williams.

v.24:pt.11:no.1-3(1975)

Contributions to the flora of Venezuela : from Droseraceae through Umbelliferae / Julian A. Steyermark and collaborators.

v.28:no.2(1952)

Contributions to the flora of Venezuela / Julian A. Steyermark and collaborators.

v.28:no.4(1957)

An overlooked genus of the Scrophulariaceae / Louis O. Williams.

v.32:no.14(1970)

A taxonomic and phytogeographic study of Brunswick Peninsula (Strait of Magellan) Hepaticae and Anthocerotae / John J. Engel.

v.41(1978)

Two new species of palms from Nicaragua [by] S. F. Glassman.

v.31:no.1(1964)

Two new Nicaraguan Juglandaceae [by] Antonio Molina R.

v.31:no.16(1968)

Tropical American plants, IX / Louis O. Williams.

v.31:no.18(1968)

Studies in the palm genus Syagrus Mart. II / S. F. Glassman.

v.32:no.8(1969)

Tropical American plants, V / Louis O. Williams.

v.29:no.10(1963)

Studies in American plants / Dorothy N. Gibson.

v.31:no.15(1968)

Revision of Lagascea (Compositae, Heliantheae) / Tod F. Stuessy.

v.38:no.8(1978)