A key to the genera of the Compositales of northeastern North America (based on vegetative and floral characters).
Series: Ohio biological survey, bulletin 38, v. 7, no. 3; Ohio Biological Survey -- no. 3
Publisher: Ohio State University
Published: 1941
Place of publication: Columbus [Ohio]
Language: eng
Number of pages: 129
Subjects: Compositae; Botany -- North America.