Published in Gayana Botanica, in 1993, in volume 50, pages 5-9
Published in Gayana Botanica, in 1993, in volume 50, pages 11-16
Published in Gayana Botanica, in 1993, in volume 50, pages 17-28
Published in Gayana Botanica, in 1993, in volume 50, pages 29-40
Published in Gayana Botanica, in 1993, in volume 50, pages 41-45
Published in Gayana Botanica, in 1993, in volume 50, pages 51-55
Published in Gayana Botanica, in 1993, in volume 50, pages 57-65
Published in Gayana Botanica, in 1993, in volume 50, pages 67-68
Published in Gayana Botanica, in 1993, in volume 50, pages 69-102
Published in Gayana Botanica, in 1993, in volume 50, pages 103-110