Published in Annals of the Missouri Botanical Garden, in 1939, in volume 26, pages 1-94

Published in Annals of the Missouri Botanical Garden, in 1939, in volume 26, pages 95-98

Published in Annals of the Missouri Botanical Garden, in 1939, in volume 26, pages 99-164

Published in Annals of the Missouri Botanical Garden, in 1939, in volume 26, pages 165-255

Published in Annals of the Missouri Botanical Garden, in 1939, in volume 26, pages 257-259

Published in Annals of the Missouri Botanical Garden, in 1939, in volume 26, pages 261-264

Published in Annals of the Missouri Botanical Garden, in 1939, in volume 26, pages 265-324

Published in Annals of the Missouri Botanical Garden, in 1939, in volume 26, pages 325-348

Published in Annals of the Missouri Botanical Garden, in 1939, in volume 26, pages 349-372

Published in Annals of the Missouri Botanical Garden, in 1939, in volume 26, pages 373-428