Journal ArticleChemotaxonomic investigation of Apocynaceae for retronecine-type pyrrolizidine alkaloids using HPLC-MS/MSBarny, Lea A.; Tasca, Julia A.; Sanchez, Hugo A.; Smith, Chelsea R.; Koptur, Suzanne; Livshultz, Tatyana; Minbiole, Kevin P.C.null2021-05-0110232883Phytochemistry185C1126620031-9422https://doi.org/10.1016/j.phytochem.2021.1126621655660; 1655553National Science Foundation