Sertulum Greeneanum
By: John Thomas Howell
Publisher: University Press
Published: 1943
Place of publication: Notre Dame, Ind
Language: eng
Number of pages: 39
Notes: Offprint: American Midland Naturalist, vol. 30, no. 1, July 1943, p. 6-39.

Includes bibliographies.
Table of contents: title: I. A systematic study of Phacelia humilis and its relatives; title: II. Types of Phacelia in the Greene Herbarium; title: III. Studies in Cirsium.