Hoffmannias from Mexico and Central America [by] Louis O. Williams.

v.36:no.6(1973)

The ethnobotany of Chinchero, an Andean community in southern Peru / Christine Franquemont ... [et al.].

n.s. no.24(1990)

Notes on the genus Hygrolembidium (Hepaticae) [by] John J. Engel.

v.36:no.7(1974)

A systematic study of Flourensia (Asteraceae, Heliantheae) / Michael O. Dillon.

n.s. no.16(1984)

Austral Hepaticae. with a monograph of the genus in temperate Australasia and commentary on extra-Australasian taxa / John J. Engel, G.L. Smith Merrill.

n.s. no.44(2004)

Studies of American plants. by Paul C. Standley.

v.8:no.5(1931)

The generic name Saracha Ruiz & Pavón (Solanaceae) / Johnnie L. Gentry, Jr.

v.36:no.8(1974)

Bignoniaceae of tropical North America [by] Louis O. Williams.

v.36:no.4(1973)

Flora Costaricensis / William Burger, editor.

n.s. no.23(1990)

Flora Costaricensis. William Burger, editor. Family #40, Casuarinaceae, Family #41, PIperaceae [by] William Burger.

v.35(1971)

Flora of Peru: Family compositae : Walter C. Holmes, Sidney McDaniel.

n.s. no.9(1982)

Flora Costaricensis / William Burger, editor.

n.s. no.13(1983)

Flora costaricensis / William Burger, editor.

n.s. no.41(2000)

Systematics of Laccaria (Agaricales) in the continental United States and Canada, with discussions on extralimital taxa and descriptions of extant types / Gregory M. Mueller.

n.s. no.30(1992)

Tropical American plants, XII / Louis O. Williams.

v.34:no.8(1972)