Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 1-30

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 31-146

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 147-163

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 165-192

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 193-244

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 245-248

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 249-269

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 271-286

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 287-292

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 293-298

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 299-374

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 375-384

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 385-408

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 409-491

Published in Annals of the Missouri Botanical Garden, in 1941, in volume 28, pages 493-522