The Scrophulariaceae of eastern temperate North America
By: by Francis W. Pennell.
Series: The Academy of natural sciences of Philadelphia ... Monographs -- no. 1.; Monograph (Academy of Natural Sciences of Philadelphia) -- 1.
Published: 1935
Place of publication: Philadelphia
Language: eng
Number of pages: 650
Subjects: Scrophulariaceae.
Notes: "Printed by the George W. Carpenter fund for the encouragement of original scientific research."