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.]

TIMES OF THE FRUITING OF FERNS

  “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.