Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 43-44

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 64

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 84

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 123-127

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 128

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 129-151

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 152-158

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 165-198

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 10, pages 21-25

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 10, pages 27-28

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 10, pages 29-31

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 10, pages 32-38

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 10, pages 39-40

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 10, pages 41-58

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 10, pages 59-60

Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 255-256