Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 1-14

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 15-36

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 37-42

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 43-92

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 93-164

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 165-173

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 175-233

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 233-236

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 237-269

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 271-278

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 279-288

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 289-292

Published in Annals of the Missouri Botanical Garden, in 1917, in volume 4, pages 305-362