Hypericum caprifoliatum (Guttiferae) Cham. & Schltd.: a species native to South Brazil with antidepressant-like activity - Viana, A F; do Rego, J C; Munari, L; Dourmap, N; Heckler, A P; Costa, T D; von Poser, G L; Costentin, J; Rates, S M (Fundam Clin Pharmacol, 2006)