Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 1-36

Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 109-118

Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 119-132

Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 133-142

Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 143-151

Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 153-176

Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 177-203

Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 205-210

Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 211-224

Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 225-299

Published in Annals of the Missouri Botanical Garden, in 1918, in volume 5, pages 301-372