For Pyracantha
Feng, H.-Z., S.-J. Wei, L.-Y. Wang, S.-F. Chen, Q. Fan, and W.-B. Liao. 2021. A taxonomic revision of the Pyracantha crenulata complex (Rosaceae, Maleae). Phytotaxa 478: 239-252.
Kalkman. 2004. In Kubitzki, K., ed. 2004. The families and genera of vascular plants. VI. Flowering plants – Dicotyledons – Celastrales, Oxalidales, Rosales, Cornales, Ericales. Springer, Berlin. 489 pp.
Lance, R.W., and P.F. Zika. 2014. Pyracantha. In Flora of North America Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9, Magnoliophyta: Picramniaceae to Rosaceae. Oxford Univ. Press, New York, NY. 713 pp.
Nesom, G.L. 2010a. Pyracantha (Rosaceae) naturalized in Texas and the southeastern United States. Phytoneuron 2010-2: 1-6.
Robertson, K.R. 1974. The genera of Rosaceae in the southeastern United States. J. Arnold Arb. 55: 303-332, 344-401, 611-662.
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