Evaluation of the species boundaries between Parthenium hysterophorus and P. glomeratum (Asteraceae-Ambrosiinae): morphological, anatomical, chromosomal and phytochemical evidence

by Marianela Piazzano, Gabriel Bernardello, Lázaro Novara, Silvia R. Alarcón, Juana R. de la Fuente, Miriam Hadid
Published 1998-06-01