Published in Memoirs of The Torrey Botanical Club, in 1902, in volume 8, issue 2, pages 113-183

Published in Memoirs of The Torrey Botanical Club, in 1902, in volume 8, issue 3, pages 185-211

Published in Memoirs of The Torrey Botanical Club, in 1902, in volume 11, issue 2, pages 135-250

Published in Memoirs of The Torrey Botanical Club, in 1902, in volume 12, issue 1, pages 1-98