The genus Penstemon in New Mexico
By: Gladys T. Nisbet and R.C. Jackson
Series: The University of Kansas science bulletin -- 4th ser., v. 41, no. 5
Publisher: University of Kansas Publications
Published: 1960
Place of publication: Lawrence, Kan
Language: eng
Number of pages: 759
Subjects: Penstemons; Classification
Notes: Title from caption.

Bibliography: p. 744-745.