Madia wheeleri (A. Gray) D.D.Keck [ Hemizonia wheeleri A. Gray]
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Madia wheeleri (A. Gray) D.D.Keck [ Hemizonia wheeleri A. Gray] [Compositae]
J.T. Rothrock, Rep. U.S. Geogr. Surv., Wheeler: t. 10 (1878) [Sprague]