xanthoxylum carolinianum

Webster's Dictionary (GCIDE)

1.A prickly shrub (Xanthoxylum Americanum) with yellowish flowers appearing with the leaves; also called toothache tree. All parts of the plant are pungent and aromatic. The southern species is Xanthoxylum Carolinianum. --Gray. [1913 Webster]

2.(Bot.), Hercules'-club, also called the Angelica tree. [PJC]