Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 1-6

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 7-21

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 23-44

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 45-78

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 79-118

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 119-222

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 239-362

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 363-372

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 373-467

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 469

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 471-568

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 569-581

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 583-604

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 605-790

Published in Annals of the Missouri Botanical Garden, in 1933, in volume 20, pages 791-806