Published in Rhodora, Volume 80, Issue 1, January 1, 1977, pages 135-146.
NOTE: At the time of publication, the author David J. Keil was not yet affiliated with Cal Poly.
Pectis L. sect. Pectidium (Less.) A. Gray is a small but very wide-ranging group of taxa. The geographic range of this section includes both insular distribution patterns and broad disjunctions. In an effort to clarify the systematic relationships and to provide a possible explanation for the interesting distribution patterns, I undertook an investigation of this section.
The definitive version is available at Botanicus.org.