Published in Annals of the Missouri Botanical Garden, in 1921, in volume 8, pages 1-62

Published in Annals of the Missouri Botanical Garden, in 1921, in volume 8, pages 63-96

Published in Annals of the Missouri Botanical Garden, in 1921, in volume 8, pages 97-102

Published in Annals of the Missouri Botanical Garden, in 1921, in volume 8, pages 103-236

Published in Annals of the Missouri Botanical Garden, in 1921, in volume 8, pages 237-281

Published in Annals of the Missouri Botanical Garden, in 1921, in volume 8, pages 283-341

Published in Annals of the Missouri Botanical Garden, in 1921, in volume 8, pages 343-356

Published in Annals of the Missouri Botanical Garden, in 1921, in volume 8, pages 357-359

Published in Annals of the Missouri Botanical Garden, in 1921, in volume 8, pages 361-396