Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 169-173

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 174-191

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 192-203

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 204-259

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 260-272

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 273-305

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 306-412

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 413-426

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 427-441

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 442-448

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 449-460

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 478-563

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 564-567

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 567

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 568-570

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 570

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 571-572

Published in Annals of the Missouri Botanical Garden, in 1973, in volume 60, pages 572