• Recuentos cromosómicos en compositae de colombia 

      Jansen, Robert K.; Stuessy, Tod F.; Díaz Piedrahíta, Santiago; Funk, V. A.
      Eighty-six chromosome counts of Compositae are reported from differentprovinces of Colombia. Twenty-four are first counts from the genusPlagiocheilus (Astereae), and from species in Achyrocline, Aspilia, Baccharis, Calea, ...
      Universidad Nacional de Colombia Revistas electrónicas UN Caldasia.