References

For Hamelia

Elias, T.S. 1976. A monograph of the genus Hamelia (Rubiaceae). Memoirs N.Y. Botanical Garden 26: 81-144. Google Scholar

Rogers, G.K. 1987. The genera of Cinchonoideae (Rubiaceae) in the southeastern United States. J. Arnold Arb. 68: 137-183. Google Scholar

Rogers, G.K. 2005. The genera of Rubiaceae in the southeastern United States, part II. Subfamily Rubioideae, and subfamily Cinchonoideae revisited (Chiococca, Erithalis, and Guettarda). Harvard Papers in Botany 10: 1-45. Google Scholar