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 8, issue 4, pages 200
Published in Botanical Museum Leaflets, Harvard University, in 1940, in volume 9, issue 4, pages 27-28