References

For Spermacoce

Bacigalupo, N.M. 1972. Observaciones sobre algunas especies de los géneros Spermacoce L. y Spermacoceodes O.K. (Rubiaceae). Darwiniana 17: 341-357. Google Scholar

Florentín, M.N., J.E. Florentín, and R.M. Salas. 2020. Integrative taxonomic analyses sheds light on three historically disputed American Spermacoce species, and a key to the American species of Spermacoce (Spermacoceae, Rubiaceae). Syst. Bot. 45: 585-606. Google Scholar

Franck, A.R., G.D. Gann, J. Sadle, and A. Farid. 2021. Sharpening plant taxonomy in south Florida: Baccharis and Melanthera (Asteraceae), Borreria and Chiococca (Rubiaceae), and Lantana (Verbenaceae). Phytologia 103: 29-68. 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

Ward, D.B. 2011b. Keys to the flora of Florida – 29, Spermacoce (Rubiaceae). Phytologia 93: 275-282. Google Scholar