Published in Fieldiana Botany, in 1990, in volume 23, pages 1-138

Published in Fieldiana: Botany, New Series, in 1990, in volume 23, pages 129-138

Published in Fieldiana Botany, in 1990, in volume 24, pages 1-66

Published in Fieldiana Botany, in 1990, in volume 25, pages 1-209