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    • Efimbriate, herbaceous aristolochias in brazil and northwest south america 

      Bazzolo, Thomas M.; Pfeifer, Howard WM.
      In this paper, four species of Aristolochia are taxonomically revised for Brazil, Colombia and Venezuela: they are treated as a unit because they are the only herbaceous, efimbriate, perennial species native to this region. ...
      Universidad Nacional de Colombia Revistas electrónicas UN Caldasia.