320 IOWA ACADEMY OF SCIENCE Vol. XXVI, 1919 



Brown county: Long Pine, canons, July 23, 1887, C. E. Bcsscy; 

 Long Pine, Seven Springs, July, 1892, No. 439, Albert F. Woods; 

 Long Pine, July 29, 1892, No. 270, /. G. Smith and Roscoc Pound. 



Dawes county: Belmont, wooded bluffs, July 18, 1889, No. 6119, 



H. J. Webber. 



Sioux county : Squaw canon, August, 1892, No. 439, Albert F. 

 M^oods; Monroe canon, north of Harrison, June 22, 1911, Ray- 

 mond J. Pool and C. V. Williams. 



Dryopteris cristata (L.) A. Gray. (Aspidiiim cristatuni (L.) 

 Swartz.) Crested shield-fern. This species is known only from 

 one locality in the state. 



Thomas county : central Nebraska, on south fork of Dismal 

 river, on wet meadows, August 14, 1893, No. 1530, P. A. Rydbcrg. 



Dryopteris spinulosa (Muell.) Kuntze. (Aspidiiim spiniilosum 

 (Muell.) Swartz.) Spinulose shield-fern. Rarely found in Nebraska 

 and known from only two localities. 



Thomas county : damp shaded banks, near water's edge. Dismal 

 river, July 12, 1889, Nos. 6125, 6126, 6127, H. J. Webber; near 

 Plummer ford, Dismal river, in damp woods, July 4, 1893, No. 

 1484, P. A. Rydberg. 



Brown county : Long Pine, June 25, 1892, Rev. J. M. Bates; 

 September 4, 1893, No. 2939, Fred Clements. 



Dryopteris thelypteris (L.) A. Gray. (Aspidiiim thelypteris 

 (L.) Swartz.) Marsh shield-fern. This species is common in most 

 portions of the state. It occurs in moist shaded places and grassy 

 wet bottoms, often associated with Onoclea sensibilis, and forming 

 with it a fern meadow. 



Jefferson county: Endicott, Republican valley, August 23, 1893, 

 No. 2004, A. F. Woods and De Alton Saunders. 



Franklin county : in prairie hay, cut in the Republican vallev, near 

 Franklin, May 5, 1896, No. 6777, E. M. Hussong. 



Kearney county: marsh near Platte river, June 15, 1891, No. 478, 

 P. A. Rydberg; Newark, July, 1892, Dr. H. Hapeman. 



Buffalo county: Kearney, 1887, G. A. Beecher; August, 1893, 

 Misses Smith and Lee. 



Thomas county: wet bottoms, Loup river, July 11. 1889, No. 



6123, //. /. Webber; wet bottoms. Dismal river, July 12, 1889, No. 



6124, H. J. Webber; on south fork of Dismal river, in wet meadow, 

 August 14, 1893, No. 1684, P. A. Rydberg; Halsey, July, 1911. R. J. 

 Pool; also reported from the vicinity of Thedford by Bessey and 

 Webber. 



Dodge county: Fremont, August 9, 1872, C. E. Bessev. 



