Published in Annals of the Missouri Botanical Garden, in 1924, in volume 11, pages 37-42

Published in Annals of the Missouri Botanical Garden, in 1924, in volume 11, pages 43-97

Published in Annals of the Missouri Botanical Garden, in 1924, in volume 11, pages 99-388

Published in Annals of the Missouri Botanical Garden, in 1924, in volume 11, pages 389-410

Published in Annals of the Missouri Botanical Garden, in 1924, in volume 11, pages 411-459