Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 1-140
Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 141-146
Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 147-247
Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 249-289
Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 291-307
Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 309-313
Published in Annals of the Missouri Botanical Garden, in 1946, in volume 33, pages 315-404