Blasdell, R.F.
1963.
A monographic study of the fern genus Cystopteris. Mem Torrey Bot. Club 21:1-102.
|
Boivin, B.
1966.
Etudes pteridologiques. III. Variations du Woodsia oregana. Bull. Soc. Bot. France 113:407-409.
|
Britton, D.M.
1962.
Dryopteris dilatata (Hoffm.) A.Grey in North America. Rhodora 64:207-212.
|
Britton, D.M.
1972.
Spinulose wood ferns in western North America. Can. Field-Nat. 86:241-247.
|
Britton, D.M.
1972.
Spore ornamentation in the Dryopteris spinulosa complex. Can. J. Bot. 50:1617-1621.
|
Britton, D.M.
1977.
The fern Woodsia obtusa (Spreng.) Torrey in Ontario. Can. Field-Nat. 91:84-85.
|
Britton, D.M., and A.C. Jermy.
1974.
The spores of Dryopteris filix-mas and related taxa in North America. Can. J. Bot. 52:1923-1926.
|
Brown, D.F.M.
1964.
A monographic study of the fern genus Woodsia. Nova Hedwigia 16:1-154.
|
Carlson, T.M., and W.H. Wagner.
1982.
The North American distribution of the genus Dryopteris. Contrib. Univ. Mich. Herb. 15:141-162.
|
Cody, W.J., and D.M. Britton.
1984.
Polystichum lemmonii, a rock shield-fern new to British Columbia and Canada. Can. Field-Nat. 98:375.
|
Crane, F.W.
1960.
A key to American Dryopteris based on characters of the perispore. Amer. Fern J. 50:270-275.
|
Fuchs, H.P.
1974.
The correct name of the alpine lady fern. Candollea 29:181-205.
|
Hagenah, D.J.
1961.
Spore studies in the genus Cystopteris. I. The distribution of Cystopteris with non-spiny spores in North America. Rhodora 63:181-193.
|
Jamison, J.A., and G.W. Douglas.
1998.
Status of the Coastal Wood Fern, Dryopteris arguta (Dryopteridaceae) in Canada. Can. Field-Nat. 112:284-288.
|
Jermy, A.C., and L. Harper.
1971.
Spore morphology of the Cystopteris fragilis complex. British Fern Gazette 10:211-213.
|
Maxon, W.R.
1918.
Polystichum andersoni and related species. Amer. Fern J. 8:33-37.
|
Prange, R.K., and P. von Aderkas.
1985.
The biological flora of Canada 6. Matteuccia struthiopteris (L.) Todaro, Ostrich Fern. Can. Field-Nat. 99:517-532.
|
Pryer, K.M. and D.M. Britton.
1983.
Spore studies in the genus Gymnocarpium. Can. J. Bot. 61:377-388.
|
Sarvela, J.
1978.
A synopsis of the fern genus Gymnocarpium. Ann. Bot. Fenn. 15:101-106.
|
Sarvela, J.
1980.
Gymnocarpium hybrids from Canada and Alaska. Ann. Bot. Fenn. 17:292-295.
|
Sarvela, J., D.M. Britton and K. Pryer.
1981.
Studies on the Gymnocarpium robertianum complex in North America. Rhodora 83:421-431.
|
Sorsa, P.
1980.
Spore morphology of the fern genus Gymnocarpium and its relations to the taxonomy. Ann. Bot. Fenn. 17:86-90.
|
von Aderkas, P.
1984.
Economic history of ostrich fern, Matteuccia struthiopteris, the edible fiddlehead. Econ. Bot. 38:14-23.
|
von Aderkas, P.
1983.
Studies of gametophytes of Matteuccia struthiopteris (ostrich fern) in nature and in culture. Can. J. Bot. 61:3267-3270.
|
Wagner, D.H.
1993.
Polystichum. In New taxa and nomenclatural changes in the North American fern flora. Contr. Univ. Michigan Herb. 19:31-61.
|
Wagner, D.H.
1979.
Systematics of Polystichum in western North America north of Mexico. Pteridologia 1:1-64.
|
Wagner, W.H., Jr.
1973.
Reticulation of holly ferns (Polystichum) in the western United States and adjacent Canada. Amer. Fern J. 63:99-115.
|
Widen, C.-J., and D.M. Britton.
1971.
A chromatographic and cytological study of Dryopteris dilatata in North America and easternAsia. Can. J. Bot. 49:247-258.
|
Widen, C.-J., and D.M. Britton.
1971.
A chromatographic and cytological study of Dryopteris filix-mas and related taxa in North America. Can. J. Bot. 49:1589-1600.
|
Windham, M.D.
1993.
Woodsia. Pages 270-280 in Flora of North America Editorial Committee eds. Flora of North America North of Mexico - Volume 3. Magnoliophyta: Magnoliidae and Hamamelidae. Oxford Univ. Press Inc. New York, NY.
|
Alverson, E.R.
1989.
Cryptogramma cascadensis, a new parsley-fern from western North America. Amer. Fern J. 79:95-102.
|
Brunton, D.F.
1986.
Status of the southern maidenhair fern, Adiantum capillus-veneris (Adiantaceae) in Canada. Can. Field-Nat. 100:404-408.
|
Brunton, D.F.
1979.
Taxonomy, distribution, and ecology of the Cliff-brake Ferns (Pellaea: Polypodiaceae) in Alberta. Can. Field-Nat. 93:288-295.
|
Cody, W.J.
1983.
Adiantum pedatum ssp. calderi, a new subspecies in northeastern North America. Rhodora 85:93-96.
|
Gastony, G.J.
1988.
The Pellaea glabella complex: electrophoretic evidence for the derivations of the agamosporous taxa and revised taxonomy. Amer. Fern. J. 78:44-67.
|
Lellinger, D.B.
1968.
A note on Aspidotis. Amer. Fern J. 58:140-141.
|
Paris, C.A.
1999.
Adiantum viridimontanum, a new maidenhair in eastern North America. Rhodora. (in press)
|
Paris, C.A., and M.D. Windham.
1988.
A biosystematic investigation of the Adiantum pedatum complex in eastern North America. Syst. Bot. 13:240-255.
|
Rigby, S.J., and D.M. Britton.
1970.
The distribution of Pellaea in Canada. Can. Field-Nat. 84:137-144.
|
Smith, A.R.
1975.
The California species of Aspidotis. Madrono 23:15-24.
|
Smith, D.M., S.P. Craig, and J. Santarosa.
1971.
Cytological and chemical variation in Pityrogramma triangularis. Amer. J. Bot. 58:292-299.
|
Tryon, A.F.
1957.
A revision of the fern genus Pellaea section Pellaea. Ann. Missouri Bot. Gard. 44:125-193.
|
Tryon, A.F.
1972.
Spores, chromosomes and relations of the fern Pellaea atropurpurea .Rhodora 74:220-241.
|
Tryon, A.F., and D.M. Britton.
1958.
Cytotaxonomic studies of the fern genus Pellaea. Evolution 12:137-145.
|
Wagner, W.H., Jr. and K.E. Boydston.
1978.
A dwarf coastal variety of maidenhair fern, Adiantum pedatum. Can. J. Bot. 56:1726-1729.
|
Weatherby, C.A.
1920.
Varieties of Pityrogramma triangularis. Rhodora 22:113-120.
|
Windham, M.D.
1993a.
New taxa and nomenclatural changes in the North American fern flora. Contr. Univ. Michigan Herb. 19:31-61.
|
Windham, M.D.
1993b.
Pellaea. In Flora of North American Editorial Committee, eds. Flora of North America
|