Studies of Central American plants. by Paul C. Standley and Julian A. Steyermark.

v.23:no.4(1944)

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

v.27:no.1(1950)

Studies of American plants. by Paul C. Standley.

v.17:no.2(1937)

Studies of Central American plants. by Paul C. Standley and Julian A. Steyermark.

v.23:no.2(1944)

Studies of Central American plants. by Paul C. Standley and Julian A. Steyermark.

v.23:no.1(1943)

Studies of American plants. by Paul C. Standley.

v.17:no.3(1937)

Studies of Central American plants. by Paul C. Standley and Julian A. Steyermark.

v.23:no.5(1947)

Studies of the American flora - I / By Julian A. Steyermark.

v.17:no.5(1938)

Studies of American plants. by Paul C. Standley.

v.22:no.2(1940)

Studies of American plants. by Paul C. Standley.

v.8:no.1(1930)

Studies of American plants. by Paul C. Standley.

v.11:no.5(1936)

Studies of American plants. by Paul C. Standley.

v.22:no.1(1940)

Studies in American plants, II / Dorothy N. Gibson.

v.32:no.11(1970)

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

v.27:no.2(1951)

Studies in American plants / Dorothy N. Gibson.

v.31:no.15(1968)