Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 1-140

Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 141-146

Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 147-247

Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 249-289

Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 291-307

Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 309-313

Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 315-404