Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 33-57

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 65-68

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 93-105

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 106-108

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 109-119

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 121-128

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 134-140

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 141-151

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 153-168

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 181-186

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, pages 187

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 9, issue 4, pages 27-28

Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 8, issue 4, pages 200