Published in Acta Botánica Mexicana, in 1991, in volume 13, pages 1-7

Published in Acta Botánica Mexicana, in 1991, in volume 13, pages 9-30

Published in Acta Botánica Mexicana, in 1991, in volume 13, pages 31-38

Published in Acta Botánica Mexicana, in 1991, in volume 13, pages 39-51

Published in Acta Botánica Mexicana, in 1991, in volume 13, pages 53-74

Published in Acta Botánica Mexicana, in 1991, in volume 14, pages 3-21

Published in Acta Botánica Mexicana, in 1991, in volume 14, pages 23-32

Published in Acta Botánica Mexicana, in 1991, in volume 14, pages 33-57

Published in Acta Botánica Mexicana, in 1991, in volume 16, pages 1-5

Published in Acta Botánica Mexicana, in 1991, in volume 16, pages 15-43

Published in Acta Botánica Mexicana, in 1991, in volume 16, pages 45-55

Published in Acta Botánica Mexicana, in 1991, in volume 16, pages 57-87

Published in Acta Botánica Mexicana, in 1991, in volume 16, pages 89-93

Published in Acta Botánica Mexicana, in 1991, in volume 16, pages 95-103