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)

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)

A new hybrid in the palm genus Syagrus Mart. / S. F. Glassman.

v.32:no.16(1970)

New species of Digitaria, Pennisetum, and Poa (Gramineae) from Costa Rica / Richard W. Pohl.

v.38:no.2(1976)

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

v.24:pt.13(1977)

Tropical American plants, VIII / Louis O. Williams.

v.31:no.10(1967)

Tropical American plants, III / Louis O. Williams.

v.29:no.7(1962)

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

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

Tropical American Myrtaceae; notes on generic concepts and descriptions of previously unrecognized species.

v.29:no.3(1956)

Orchids of Peru / Charles Schweinfurth.

v.30:no.1(1958)

Preliminary taxonomic studies in the palm genus Attalea H.B.K. / S. F. Glassman.

v.38:no.5(1977)

A new Guatemalan Spigelia / Dorothy N. Gibson.

v.32:no.1(1968)