168 BOTANY OF MICHIGAN 



Aspidium marginale (L.) Sw. Evergreen wood fern. In damp rich 

 woods apparently preferring bluffy shaded banks of streams. Noticed 

 in particular along a small stream running into Murphy's Lake. 



Aspidium goldianum Hook. Goldie's fern. Noticed in particular 

 near Murphy's Lake in rich woods. Not noticed elsewhere. 



Aspidium cristatum (L.)Sw. Crested shield-fern. "In rich woods in 

 Aimer Township." C. A. Davis. 



Aspidium cristatum clintonianum D. C. Eaton. Clinton's fern. Damp 

 rich woods. Frequent. 



Aspidium spinulosum (0. F. Miiller) Sw. Spinulose shield-fern. 

 Common in rich woods. 



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

 shield-fern. Common in damp rich woods, especially near the small 

 lakes. 



Cystopteris bidbifera (L.) Bernh. Bulblet cystopteris. Frequent and 

 noticed especially in tamarack swamps near the small lakes and on 

 bluffy shaded banks of streams. 



Cystopteris fragilis (L.) Bernh. Brittle fern. Occasional in damp 

 rich woods. 



Onoclea sensibilis L. Sensitive fern. Very common in damp open or 

 shaded places. 



Onoclea struthioptcris (L.) Hoffm. Ostrich fern. Apparently pre- 

 ferring rich shaded ground near streams. Noticed only near Murphy's 

 Lake. 



OSMUND ACEAE. Flowering Fern Family 



Osmunda regalis L. Royal fern. Common in swamps and wet woods. 



Osmunda claytoniana L. Clayton's fern. Noticed on low ground 

 near Murphy's Lake. Probably frequent throughout. 



Osmunda cinnamomeo, L. Cinnamon fern. Frequent in swamps and 

 damp open woods. 



OPHIOGLOSSACEAE. Adder's Tongue Family 



Botrychium obliquum Muhl. Ternate grape fern. In rich woods near 

 Murphy's Lake. Apparently infrequent. 



Botrychium virginianum (L.) Sw. Rattlesnake fern. Common in 

 rich woods. 



EQUISETACEAE. Horsetail Family 



Equisetum arvense L. Common horsetail. Common in rich or poor 

 ground. Usually very abundant along railway embankments, where 

 the extensive roots tend to bind the embankment together. 



Equisetum sylvatium L. Wood horsetail. Common in damp shaded 



