xx Porophyllum ruderale (Jacq.) Cass. [ Cacalia porophyllum L.]
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xx Porophyllum ruderale (Jacq.) Cass. [- Kleinia ruderalis Jacq.] [Compositae]
H. Ruiz, J. Pavón, Draw. Roy. Bot. Exped. Viceroy. Peru: t. 1168 [] (1777) [I. Galvez]