Title:Análise farmacognóstica de Piper regnellii (Miq.) C. DC. var. pallescens (C. DC.) Yunck: aspectos botânicos e enfoque físico-quimico preliminar / Pharmacognostic analysis of Piper regnellii (Miq.) C. DC. var. pallescens (C. DC.) Yunck: botanical aspects and preliminary physical-chemical analysis