References
Szubryt, M.B., L.E. Urbatsch, Y.L. Vargas-Rodriguez, D. Barfknecht, and K.M. Neubig. 2020. Morphological, molecular, and biogeographic evidence for specific recognition of Euthamia hirtipes and Euthamia scabra (Asteraceae, Astereae). Syst. Bot. 45: 658-667. Google Scholar