Published in Annals of the Missouri Botanical Garden, in 1950, in volume 37, pages 1-120

Published in Annals of the Missouri Botanical Garden, in 1950, in volume 37, pages 121-314

Published in Annals of the Missouri Botanical Garden, in 1950, in volume 37, pages 315-395

Published in Annals of the Missouri Botanical Garden, in 1950, in volume 37, pages 397-408

Published in Annals of the Missouri Botanical Garden, in 1950, in volume 37, pages 409-476

Published in Annals of the Missouri Botanical Garden, in 1950, in volume 37, pages 477-560