Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 173-201

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 203-217

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 219-233

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 235-237

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 239-240

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 373-413

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 241-247

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 249-277

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 279-300

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 301-315

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 345-353

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 355-361

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 363-371

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 317-323

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 325-343

Published in Annals of the Missouri Botanical Garden, in 1944, in volume 31, pages 1-172