Published in Annals of the Missouri Botanical Garden, in 1926, in volume 13, pages 1-34

Published in Annals of the Missouri Botanical Garden, in 1926, in volume 13, pages 35-70

Published in Annals of the Missouri Botanical Garden, in 1926, in volume 13, pages 71-100

Published in Annals of the Missouri Botanical Garden, in 1926, in volume 13, pages 101-140

Published in Annals of the Missouri Botanical Garden, in 1926, in volume 13, pages 141-172

Published in Annals of the Missouri Botanical Garden, in 1926, in volume 13, pages 355-390

Published in Annals of the Missouri Botanical Garden, in 1926, in volume 13, pages 391-424

Published in Annals of the Missouri Botanical Garden, in 1926, in volume 13, pages 425-484