publication venue for
- Two new species of Gentianella (Gentianaceae) from Peru. 64:282-288. 2012
- Abstracts of Papers to be Presented at the Joint Sessions of the American Society of Plant Taxonomists and the Systematics Section of the Botanical Society of America at the American Institute of Biological Sciences Meetings, University of Minnesota, Minneapolis, 27 August-1 September 1972. 24:117-117. 1972
- Taxonomy and Distribution of Clematis, Sect. Atragene (Ranunculaceae), in North America. 23:361-361. 1971
- Taxonomy of Gentiana, Section Pneumonanthae, in Eastern North America. 19:1-1. 1967