Heliantheae is one of the nine tribes of the Family Compositae. It is believed to have originated in South America soon after the appearance of the Family and may be regarded as the oldest and most primitive of the tribes.
Proceedings of the Iowa Academy of Science
©1929 Iowa Academy of Science, Inc.
Johns, M. Rae
"Heliantheae of Iowa. I,"
Proceedings of the Iowa Academy of Science, 36(1), 147-184.
Available at: https://scholarworks.uni.edu/pias/vol36/iss1/27