Mem. Am. Acad. Arts Sci., ser. 2 5: 319 (1855)
[Memoirs of the American Academy of Arts and Sciences, ser. 2]
[Memoirs of the American Academy of Arts and Sciences, ser. 2]
635262 771661 Petalonyx nitidus S. Watson
J.T. Rothrock, Rep. U.S. Geogr. Surv., Wheeler: t. 4 (1878) [W.H. Seaman]
859742 771664 Petalonyx thurberi A. Gray
W.H. Emory, Rep. U.S. Mex. Bound., vol. 2(1): (Botany of the boundary): t. 22 (1859)
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