Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 1-132

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 133-257

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 281-284

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 287-353

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 355-404

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 405-412

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 413-431

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 433-473

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 475-477

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 479-505

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 507-541

Published in Annals of the Missouri Botanical Garden, in 1949, in volume 36, pages 543-549