Nomenclature used to identify species taxonomy in Subchapter B (relating to classified plants) is according to Rhoads, A. F. and Block, T. A. (2007), The Plants of Pennsylvania An Illustrated Manual Second Edition, Philadelphia, Pennsylvania: University of Pennsylvania Press., unless a different taxonomic source is indicated immediately following the scientific name.
17 Pa. Code § 45.3
The provisions of this § 45.3 amended under section 7 of the Wild Resource Conservation Act (32 P.S. § 5307); and sections 305(a)(9) and 313(g) of the Conservation and Natural Resources Act (71 P.S. §§ 1340.305(a)(9) and 1340.313(g)).