Published in Memoirs of The Torrey Botanical Club, in 1899, in volume 6, issue 1, pages 211-246

Published in Memoirs of The Torrey Botanical Club, in 1899, in volume 6, issue 4, pages 247-283

Published in Memoirs of The Torrey Botanical Club, in 1899, in volume 6, issue 4, pages 285-307

Published in Memoirs of The Torrey Botanical Club, in 1899, in volume 7, issue 2, pages 1-208

Published in Memoirs of The Torrey Botanical Club, in 1899, in volume 8, issue 1, pages 1-112