Zanthoxylum americanum P. Miller. Northern Toothache Tree, Northern Prickly-ash. Phen: Mar-May; Jul-Aug. Hab: Woodlands, forests, and glade margins over calcareous or mafic rocks, often forming extensive colonies near outcrops. Sometimes planted. Dist: S. QC west to e. ND, south to e. SC (a single site known in the state), c. GA, Panhandle FL, e. TN, c. TN, and OK; disjunct in ne. Mexico (NLE, TAM).

Origin/Endemic status: Native

Synonymy: = Ar, C, Fl4, G, GrPl, Il, K1, K3, K4, Mi, NE, NY, Pa, RAB, S, Tat, Tn, Va, W, WH3, WV, Porter (1976), Reynel (2017); = Xanthoxylum americanum – F, S13, orthographic variant

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FAC
• Eastern Mountains and Piedmont: FACU
• Great Plains: UPL
• Midwest: FACU
• Northcentral & Northeast: FACU

Heliophily: 7