318 PLANT LIFE OF ALABAMA. 
Gray, Man. ed. 6, 689. Chap. Fl. 595. Eaton, Ferns N. A. 1: 257, t.85. Underwood, 
Native Ferns, 111. : : 
Alleghenian to Louisianian area. Nova Scotia, New Brunswick, Ontario; New 
England {Mount Desert Island), west to Minnesota, Arkansas, and Missouri, south 
to Florida and the Gulf coast. 
ALABAMA: Overthe State. Rich wooded hillsides. Mobileand Baldwin counties. 
Common. 
Type locality: ‘Hab. in Pensylvania, Carolina, et Tennassée.” 
Herb. Geol. Surv. Herb. Mohr. 
CYSTOPTERIS Bernh. Schrad. Neues. Journ. Bot. 1, pt.2:26. 1806. BLADDER 
FERN. 
Five species, temperate regions, Europe, western Asia, Mexico; North America 3. 
Cystopteris fragilis (L.) Bernb. Schrad. Neues, Journ. Bot. 1, pt. 2:26. 1806. 
BRITTLE FERN, 
Polypodium fragile L. Sp. Pl. 2:1091. 1753. 
Underwood, Native Ferns, 118. Gray, Man. ed. 6,689. Chap. Fl. 593. Eaton, Ferns 
NA. 2:49, t.53,f. 1-8. Wats. Bot. Calif. 2: 348. : 
Most universally distributed over cooler and temperate regions of the globe from 
the north arctic zone to Patagonia, South Africa, and Tasmania; northern Europe, 
and North America up to an altitude of 6,000 to 8,000 feet. : 
Arctie zone to Carolinian area, Boreal America to the mountains of Mexico; in 
the United States to central Georgia, and in the Rocky Mountains and California. 
ALABAMA: Mountain region to Lower hills. In rich woods and shaded damp places. 
Winston, Cullman, Lauderdale, and Etowah counties. Bibb County, Pratt’s Ferry. 
Tuscaloosa County. Not rare. 
Type locality: “ Hab. in collibus Europae frigidioris.” 
Herb. Geol. Surv. Herb. Mohr. 
Cystopteris bulbifera (L.) Bernh. Schrad. Neues. Journ. Bot. 1, pt. 2:26. 1806. 
Polypodium bulbiferum L. Sp. Pl. 2: 1091, 1753. 
Gray, Man, ed. 6, 689. Chap. F1L594. Eaton, Ferns N. A.2:55, ¢.53. Underwood, 
Native Ferns, 118. 
Canadian zone to Carolinian area. Nova Scotia, New Brunswick, Quebec, Ontario; 
New England west to Michigan and Wisconsin, Illinois, Missouri, Arkansas; south 
from New York along the mountains to Tennessee and North Carolina. 
ALABAMA: Tennessee Valley. Mountain region, dripping rocks. Lauderdale 
County, banks of Tennessee River, also Colbert County, near Sheffield, Etowah 
County, Black Creek Falls, 800 feet (Z, A. Smith). Infrequent. 
Type locality: ‘‘Hab. in Canada.” 
Herb, Geol, Surv. Herb. Mohr. 
ONOCLEA L. Sp. Pl. 2:1062. 1753. 
Three species found in temperate regions. 
Onoclea sensibilis L. Sp. Pl. 2:1062. 1753. SENSITIVE FERN. 
Gray, Man. ed. 6, 690. Chap. Fl. 596. Eaton, Ferns N. A. 2:195,4.72. Under- 
wood, Native Ferns, 119. 
Alleghenian to Louisianian area. New Brunswick, Ontario to Saskatchewan; New 
England (Mount Desert Island), west to Michigan, Minnesota, Dakota, Nebraska, 
Kansas, Missouri; south through the Ohio Valley to Florida, west to Arkansas. 
ALABAMA: Lower hills to Coast plain. Lowwoods. Swampy thickets. Most fre- 
quent in the hottoms of the lower Alabama River. Baldwin County, Stockton. 
July to September. : 
Type locality: ‘Hab. in Virginia.” 
Herb. Geol. Surv. Herb. Mohr. 
WOODSIA Rk. Br. Trans. Linn. Soc. 11:170. 1816. 
Fifteen species of boreal and cooler temperate zones. 
Woodsia obtusa (Spreng.) Torr. Cat. Pl. Geol. Surv. N. Y.195. 1840. 
Polypodium obtusum Spreng. Anleit. 92. 1804. 
Aspidium obtusum Willd. Sp. Pl. 5: 254. 1810. 
Gray, Man. ed. 6,691. Chap. F1.596. Coulter, Contr. Nat. Herb. 2:568. Eaton, 
Ferns N. A. 2:189, 4.71, f.5-8. Underwood, Native Ferns, 121. 
Canadian zone to Carolinian area. Nova Scotia, British Columbia (source of 
Columbia River); New England west to Michigan, Wisconsin, Nebraska; south to 
