Published in Annals of the Missouri Botanical Garden, in 1957, in volume 44, pages 1-76

Published in Annals of the Missouri Botanical Garden, in 1957, in volume 44, pages 77-119

Published in Annals of the Missouri Botanical Garden, in 1957, in volume 44, pages 121-123

Published in Annals of the Missouri Botanical Garden, in 1957, in volume 44, pages 195-269

Published in Annals of the Missouri Botanical Garden, in 1957, in volume 44, pages 271-294

Published in Annals of the Missouri Botanical Garden, in 1957, in volume 44, pages 295-297

Published in Annals of the Missouri Botanical Garden, in 1957, in volume 44, pages 299-355