Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 1-44
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 45-48
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 49-59
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 61-70
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 71-92
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 93-136
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 137-142
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 143-145
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 147-158
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 159-170
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 171-174
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 175-177
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 179-181
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 183-192
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 193-200
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 201-222
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 223-251
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 253-280
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 281-307
Published in Annals of the Missouri Botanical Garden, in 1919, in volume 6, pages 309-316