References

For Smallanthus

Cronquist, A. 1980. Asteraceae, Volume I, Vascular flora of the Southeastern United States. University of North Carolina Press, Chapel Hill, N.C. Google Scholar

Robinson, H. 1978. Studies in the Heliantheae (Asteraceae). XII. Re-establishment of the genus Smallanthus. Phytologia 39: 47-53. Google Scholar

Strother, J.L. 2006ii. Smallanthus. In Flora of North America Editorial Committee. 2006b. Flora of North America north of Mexico. Volume 20, Magnoliophyta: Asteridae, part 6: Asteraceae, part 2. Oxford Univ. Press, New York, NY. 666 pp. Google Scholar

Wells, J.R. 1965. A taxonomic study of Polymnia (Compositae). Brittonia 17: 144-159. Google Scholar

Wells, J.R. 1969. A review of the varieties of Polymnia uvedalia. Rhodora 71: 204-211. Google Scholar