ROBINSON, JOHN. Ferns in Their Homes and Ours. S.E. Cassino. Salem, 1878. Out of print.
SACHS, JULIUS. Text Book of Botany. (Translated.) Macmillan & Co. London. 8vo.
SLOSSON, MARGARET. How Ferns Grow. Henry Holt & Co. New York. 1906. Out of print.
SMALL, JOHN K. Ferns of Tropical Florida. New York, 1918.
SMITH, JOHN. Historia Filicum. London, 1875. Amply illustrated, reliable.
STEP, EDWARD. Wayside and Woodland Ferns. F. Warne & Co. London, 1908.
TIDESTROM, IVAR. Elysium Marianum. Washington, D.C.
UNDERWOOD, LUCIEN M. Our Native Ferns and Their Allies. Henry Holt & Co. Edition 6. 1900. Valuable. Out of print.
WATERS, CAMPBELL E. Ferns. Henry Holt & Co. 1903. Out of print. Scarce.
WEATHERBY, C.A. Changes in the Nomenclature of the Gray's Manual of Ferns. Important article in the Rhodora of October, 1919.
WILLIAMSON, JOHN. Ferns of Kentucky. J.P. Morton & Co. Louisville, Ky. 1878.
Fern Etchings. J.P. Morton & Co. 1879. Both out of print.
WOOLSON, GRACE A. Ferns and How to Grow Them. Doubleday, Page & Co. New York, 1909.
WRIGHT, MABEL O. Flowers and Ferns in Their Haunts. Macmillan & Co. New York, 1901.
[Illustration: "Fringing the stream at every turn, Swung low the waving fronds of fern." WHITTIER.]
"Ah! well I mind the calendar Faithful through a thousand years Of the painted race of flowers."--EMERSON.
Compiled from Dodge's "Ferns and Fern Allies of New England"
May 25. Little Grape Fern. Interrupted Fern. May 30. Cinnamon Fern. June 5. Ostrich Fern. June 10. Frondosa variety of Cinnamon Fern. June 15. Matricary Grape Fern. June 20. Royal Fern. Interrupted Fern. June 25. Rattlesnake Fern. June 30. Oak Fern. Spinulose Wood Fern and Varieties. July 5. Fragile Bladder Fern. Christmas Fern. July 10. Long Beech Fern. Crested Shield Fern. Boott's Shield Fern. July 15. Moonwort. Virginia Chain Fern. Adder's Tongue. Crested Marginal Shield Fern. July 20. Slender Cliff Brake. Blunt-Lobed Woodsia. July 25. Purple Cliff Brake. Bulblet Bladder Fern. Mountain Spleen wort. July 30. Goldie's Shield Fern. Marginal Shield Fern. Clinton's Wood Fern. August 5. Wall Rue. Walking Fern. Lady Fern. August 10. Alpine Woodsia. Smooth Woodsia. Common Polypody. Maidenhair Fern. Fragrant Shield Fern. Scott's Spleenwort. Braun's Holly Fern. August 15. Rusty Woodsia. Silvery Spleen wort. Lance-leaved Grape Fern. August 20. Ebony and Maidenhair Spleenworts. Hayscented Fern. New York Fern. August 25. Broad Beech Fern. August 30. Marsh Fern. September 5. Bracken or Brake. September 10. Climbing Fern. Narrow-leaved Spleenwort. September 15. Massachusetts Fern. Green Spleenwort. Sensitive Fern. Ternate Grape Fern. September 30. Narrow-leaved Chain Fern.