FEENS. 819 



the Ohio Valley, Missouri, and Arkansas; and from New York along the mountains 

 to Georgia, Texas, and Indian Territory. 



Alabama : Mountain region. Lower hills. Shaded rocky banks. Bibb County, 

 Pratt's Ferry {E. A. Smith). Winston County, valley of Colliers Creek, 1,000 feet. 

 Rare. 



Type locality not ascertained. Willdenow's locality : " Hab. in Pennsylvania." 



Herb. Geol. Surv. Herb. Mohr. 



DENNSTAEDTIA Bernh. Schrad. Journ. Bot. 1800, pt. 2:124. 1801. 

 (DiCKSONiA L'Her. Sertum. Angl. 30. 1788.) 



About 40 species, both hemispheres, chiefly tropical. 

 Denustaedtia punctilobula (Michx.) Moore, Index Fil. xcvii, 307. 1857-62. 



Xephrodiion 2)unctiloJ)itIum Michx.Fl. Bor. Am. 2 :268. 1803. 



Dicksonia jyiloshiscula Willd. Euum. 1076. 1809. 



Dieksonia jmnctilobula Gray, Man. 628. 1848. 



Gray, Man. ed. 6, 691. Chap. Fl. 597. Eaton, Ferns N. A. 1 : 339, i. 44. Underwood, 

 Native Ferns, 121. 



AUeghenian and Carolinian areas. Nova Scotia, Ontario, Quebec, New England 

 (Mount Desert Island), west to Michigan, southern Illinois, Ohio, and Missouri; 

 south from New York along the mountains of North Carolina, Tennessee, and Georgia 

 to central Alabama. 



Alabama: Mountain region. Central Pine belt, rocky open woodlands. Winston 

 County, Colliers Creek, 1,000 feet (T. M. Peters). Bibb County, Pratt's Ferry {E. A. 

 Smith), ioO feet. Infreriuent. .luly, August. 



Type locality: " Hab. in Canada." 



Herb. Geol. Surv. Herb. Mohr. 



TRICHOMANES L. Sp. PL 2 : 1097. 1753. Bristle Fern. 



Al)oat 90 species, in the tropical and warmer temperate regions of both hem- 

 ispheres. 



Trichomanes radicans Sw. Fl. Ind. Occ. 3 : 1736. 1806. Alabama Bristle Fern. 



Gray, Man. ed. 6, 692. Chap. Fl. 597. Eaton, Ferns N. A. 1 : 179, t. 24, f. 1. Griseb. 

 Fl. Brit. W. Ind. 655. Underwood, Native Ferns, 122. 



Almost cosmopolitan in temperate regions. Southern Ireland, Azores, 

 East Indies, Pacific Islands, West Indies, Mexico to Brazil. 



Carolinian and Louisianiau areas. Central Kentucky, through the Cumberland 

 Mountains to Tennessee and Alabama. 



Alabama: Warrior table-laud. Central Pine belt. Under the shelter of drip- 

 ping rocks. Frequent in the so-called rock houses of the Carboniferous sandstone. 

 Winston County, 1,200 feet(T. M. Peters). Franklin County (Beaumont). Marion 

 County, Pikeviile (E. A. Smith'). Etowah County, Black Creek Falls, 1,000 feet. 

 Lawrence County (Beaumont and Peters). Hale County, Havana (E. A. Smith). 



Type locality: "Incolit arbores in montosis Jamaicae."' 



Herb. Geol. Surv. Herb. Mohr. 



Trichomanes petersii Gray, Am. Journ. Sci. scr. 2, 15 : 326. 1853. 



Peters's Bristle Fern. 



Chap. Fl. 597. Eaton, Ferns N. A. 1:183, t. 24, f. 2. Underwood, Native Ferns, 

 122. 



Carolinian area. 



Alap,ama: Mountain region. Warrior table-land. Deep clefts of sandstone 

 rock kept perpetually moist by dripping water. Winston County, near east fork of 

 Sip.sey River, discovered by T. M. Peters, 1853. Etowah County, falls of Black 

 Creek, near (iadsden, 1,000 feet. Marion County, Pikeviile, in rock houses (E. A. 

 Smith). Local; rare. Endemic. 



Type locality: " Hancock [now Winston] County, Alabama, not far from the Sip- 

 sey River; found only on the face of an isolated sandstone rock, within reach of the 

 spray of a waterfall. T. M. Peters, Esq." 



Herb, Geol. Surv. Herb, Mohr. 



OSMUNDA L. Sp. PI. 2 : 1063. 1753. Flowering Fern. 



Six species, chiefly of the north temperate zone, 3 North American. 

 Osmunda cinnamomea L. Sp. PI. 2: 1066. 1753. Cinnamon Fern. 



(;ray, Man. ed. 6, 693. Chap. Fl. 598. Eaton, Ferns N. A. 1:227, t. 29, f. 3-5. 

 Underwood, Native Ferns, 124. 



