CHIPPEWA COUNTY 1 2«» 



other difficult plants. To Prof. A. S. Hitchcock of the United Sta1 3 

 Department of Agriculture, for determination of grasses, and to I . 1 . 

 Forbes of Brookline, Massachusetts, for an examination of the willows 

 and violets. March 11, 1915. 



Gray's New Manual of Botairy has been followed as far as possible. 

 Changes have been made and a number of new species established since 



its publication. 



Annotated List 

 POLYPODIACEAE. Fern Family 



Polypodium vulgare L. Common polypody. Shaded rocks in eastern 

 portion of county. Plentiful. 



Phegopteris polypodioides Fee. Long beech fern. In hardwoods 

 throughout. Occasional. 



Phegopteris dryopieris (L.) Fee. Oak fern. Beech and maple woods 

 throughout Chippewa County. Common and often abundant. 



Adiantum pedatum L. Maidenhair. Margins of and open spots in, 

 beech-maple-birch woods. Frequent. 



Pteris aquilina L. Common brake. Very abundant in open or slight 1 y 

 shaded ground. Where exposed it was killed to the ground by a severe 

 frost on the night of June 13-14, 1914. 



Asplenium filix-femina (L.) Bernh. Lady fern. Open and slightly 

 shaded ground throughout. Common and often abundant. 



Aspidium Ihelypteris (L.) Sw. Marsh shield fern. Borders of marshes 

 and swamps and often in slight shade. Common and often very abun- 

 dant. 



Aspidium noveboracense (L.) Sw. New York fern. Abundant in 

 beech-maple-birch woods near the lower falls of the Tahquamenon 

 River back of Emerson. Occasional in all hardwood forests. 



Aspidium marginale (L.) Sw. Evergreen wood fern. Rich open woo< Is. 

 Frequent. 



Aspidium cristatum (L.) Sw. Crested shield fern. Wet open or shadei 1 

 rich ground. Frequent. 



Aspidium spinulosum (O. F. Miiller) Sw. Spinulose shield fern. In 

 beech-maple-birch woods throughout. Frequent. 



Aspidium spinulosum intermedium (Muhl.) D. C. Eaton. American 

 shield fern. Rich hardwoods. Common. 



Cystopteris bulbifera (L.) Bernh. Bulblet cystopteris. Open woods, 

 and on banks of streams. Occasional throughout. 



Cystopteris fragilis (L.) Bernh. Brittle fern. Damp rich woods. 

 Occasional. 



Onoclea sensibilis L. Sensitive fern. Throughout in damp open or 

 shaded ground. Common. 

 17 



