Flora of Guatemala.

v.24:pt.7:no.3(1963)

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

v.27:no.2(1951)

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)

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

v.24:pt.9:no.1-2(1970)

Flora of Guatemala : families Leguminosae, Geraniaceae, Oxalidaceae, Tropaeolaceae, Linaceae, Erythroxylaceae, Zygophyllaceae, Rutaceae, Simaroubaceae, Burseraceae, Meliaceae, and Malpighiaceae / by Paul C. Standley and Julian A. Steyermark.

v.24:pt.5(1946)

Comprehensive index to the Flora of Guatemala / Terua P. Williams.

v.24:pt.13(1977)

Flora of Guatemala / Paul C. Standley, Louis O. Williams, Dorothy Nash Gibson.

v.24:pt.10:no.3-4(1974)

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

v.24:pt.8:no.4(1969)

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

v.24:pt.8:no.1-2(1966)

Notes on the flora of Costa Rica, I / [by] William C. Burger.

v.31:no.11(1968)