Published in Botanical Museum Leaflets, Harvard University, in 1946, in volume 12, pages 117-132

Published in Botanical Museum Leaflets, Harvard University, in 1946, in volume 12, pages 179-182

Published in Botanical Museum Leaflets, Harvard University, in 1946, in volume 12, pages 225-253

Published in Botanical Museum Leaflets, Harvard University, in 1946, in volume 12, pages 255-256

Published in Botanical Museum Leaflets, Harvard University, in 1946, in volume 12, pages 301-316