IOWA ACADEMY OF SCIENCES, 145 



Phegopteris calcarea Fee. Gen. Fil. 243. 1850-52. 



This interesting species was first reported by Mr. Hoi way. 

 It is one of the rarest ferns in Iowa. 

 Iowa: Decorah, "in moss, north side of bluff" — llolway. 



Aspidinin Thelii/jteris S\y.SchYn:d. Journ. liot. 2: 40. 1800. 



This fern is abundant in swamps and low ground, espe- 

 cially in western Wisconsin and southeastern Minnesota — 

 so abundant in places as to be a common ingredient of hay. 



Iowa: Muscatine, "in wet and swampy places, fre- 

 quent" — Beppert ; Winneshiek County — Lewis. 



Southwestern Wisconsin: La Crosse, "sedge swamp" — 

 Miss King; La Crosse — Panimel. 



Aspidiumsj)i)iuIosinn Sw. ^chYad. Journ. Bot. 2: 38. 1800. 



This is another rare fern; at Muscatine it occurs under 

 the sandstone carboniferous ledge. 

 Iowa: Wild Cat Den — Beppert. 



Southwestern Wisconsin: Bloomingdale — Miss Pammel 

 and Miss King. 



Aspidiutn spinuIosKui var iiitei-iiicdiiini D. C. Eaton in A. 

 Cray, Man. Ed. 5, 665. 1S67. 



Another rare fern for the state. It occurs in a number 

 of situations, and has evidently a wider distribution than 

 the species. Its associates at Steamboat Rock are the same 

 as for A. marginale. It is not, however, as abundant. It 

 is not common at La Crosse, but more abundant in the 

 Kickapoo valley. 



Iowa: Steamboat Hock — F((uniiel, il//.§s /v/«//; Lansing — 

 Miss King. 



Aspidiion cristaf urn Sw. Schra,d. Journ. Bot. 2: 37. 1800. 



This fern is not infrequent in tamarack swamps in the 

 vicinity of La Crosse and Galesville, occurring with Viola 

 canina and Cgpripeditun spectahile. 



