For Cyrilla
Kubitzki, K., ed. 2004. The families and genera of vascular plants. VI. Flowering plants – Dicotyledons – Celastrales, Oxalidales, Rosales, Cornales, Ericales. Springer, Berlin. 489 pp. Google Scholar
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Lemke, D.E. 2009. Cyrillaceae. In Flora of North America Editorial Committee. 2009. Flora of North America north of Mexico. Volume 8, Magnoliophyta: Paeoniaceae to Ericaceae. Oxford Univ. Press, New York, NY. 585 pp. Google Scholar
Small, J.K. 1924b. Plant novelties from Florida. Bull. Torrey Bot. Club 51: 378-392. Google Scholar
Thomas, J.L. 1960. A monographic study of the Cyrillaceae. Contr. Gray Herb. Harvard Univ. 186: 1-114. Google Scholar