X P R E F A C E .
Mr. G eo r g e E. D a v en po r t ha.s helped me in many ways during
the preparation of this work, and Hon. J. W a r r e n M e r r i l l has furnished
living plants of certain species for the use of the artist.
With the last Part of this work it is intended to print a Sy.ste-
matic Conspectus of all the Genera and Species of North American
Ferns, giving brief diagnostic characters and references to the page
and plate where each species is described and figured.
D a n ie l C a d y E a ton.
N e w H a v e n , A p r i l , 18 7 9 .
L IS T OF T H E F E R N S F IG U R E D AND D E S C R IB E D
IN T H IS VO LUME .
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P l a t f , I. Lygodium palmatum, Swartz.
P l a t e II. Cheilanthes Cooperæ, D. C. Eaton.
Cheilanthes vestita, Swartz.
P l a t e HI. Asplénium serratum, Linnæus.
P l a t e IV. Asplénium ebeneum, Aiton.
Asplénium ebenoides, R. R. Scott.
P l a t e V . Botrychium Lunaria, Linnæus.
Botrychium lanceolatum, Angstrom.
Botrychium boreale, Milde.
P l a t e V I. Cheilanthes lanuginosa, Nuttall.
Cheilanthes Californica, Mettenius.
P l a t e V I I . A sp id ium N o v eb o rac en se , Sw a r tz .
P l a t e V I I I . Caniptosorus rhizophyllus. Link.
Asplénium pinnatifidum, Nuttall.