Published in Fieldiana: Botany, New Series, in 1991, in volume 26, pages 1-70

Published in Fieldiana Botany, in 1991, in volume 27, pages 1-176

Published in Fieldiana: Botany, New Series, in 1991, in volume 27, pages 42-46

Published in Fieldiana: Botany, New Series, in 1991, in volume 27, pages 55-57

Published in Fieldiana: Botany, New Series, in 1991, in volume 27, pages 111-166

Published in Fieldiana: Botany, New Series, in 1991, in volume 27, pages 167-170

Published in Fieldiana Botany, in 1991, in volume 28, pages 1-43