References

For Crocanthemum

Arrington, J.M., and K. Kubitzki. 2003. Cistaceae. Pp. 62-70. In Kubitzki, K., and C. Bayer, eds. 2003. The families and genera of vascular plants. V. Flowering plants – Dicotyledons – Malvales, Capparales, and non-betalain Caryophyllales. Springer, Berlin. 418 pp. Google Scholar

Daoud, H.S., and R.L. Wilbur. 1965. A revision of the North American species of Helianthemum (Cistaceae). Rhodora 67: 63-312 (pagination interrupted). Google Scholar

Obae, S.G. 2013. Genetic relationship among four Crocanthemum species (Cistaceae) revealed by amplified fragment length polymorphism markers. J. Torrey Bot. Soc. 140: 170-180. Google Scholar

Sorrie, B.A. 2015b. Crocanthemum. In Flora of North America Editorial Committee. 2015. Flora of North America north of Mexico. Volume 6, Magnoliophyta: Cucurbitaceae to Droseraceae. Oxford Univ. Press, New York, NY. 468 pp. Google Scholar

Wilbur, R.L., and H.S. Daoud. 1964. The genus Helianthemum (Cistaceae) in the southeastern United States. J. Elisha Mitchell Sci. Soc. 70: 38-43. Google Scholar