Studies of tropical American ferns.
Series: Smithsonian Institution.  United States National Museum. Contributions from the United States National Herbarium -- Vol. 10, Pt. 7; 13, pt. 1; 16, pt. 2; 17, pts. 2, 4, 7; 24, pt. 2
Publisher: Govt. Printing Office
Published: 1908
Place of publication: Washington
Language: eng
Subjects: Ferns; Botany -- Central America; Botany -- West Indies; Botany -- Mexico.