Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 159-168

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 169-438

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 151-158

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 439-446

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 447-456

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 457-509

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 543-552

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 553-564

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 565-598

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 511-525

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 527-542

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 639-655

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 1-68

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 69-128

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 129-150

Published in Annals of the Missouri Botanical Garden, in 1936, in volume 23, pages 599-638