168 FLORA OF MICHIGAN. 



* 1707. A. Goldiaiium, Hook. C. & S. 



Moist woods. Flint; Hubbardston; Owosso, G. H. Hicks. Rare. 



' 1708. A. Filix-mas, Swartz. Male-Fern. U. P. 



Rocky woods. Keweenaw Peninsula, Lake Superior, Gray. 



*1709. A. marginale, Swartz. Th. 



Hillsides in rich woods. S. Haven, Bailey; Flint ; Hubbardston and northward. Frequent. 



* 1710. A. acrostichoides, Swartz. Christmas Fern. Th. 

 Shady hillsides. Fronds evergreen, used for decoration. Common. 



1711. A. Loncliitis, Swartz. U. P. 

 Woods. Southern shore of Lake Superior, Prof . Whitney. 



1712. A. aculeatum, Swartz., var. Braunii, Koch. U. P. 

 Ontonagon Peninsula, Eaton's Ferns of N. A. ; Keweenaw Co., F. 



545. CYSTOPTEKIS, Bernh. BLADDER FERN. 



*1713. C. bulbifera, Bernh. Th. 



Moist shaded 'hillsides. Locally frequent. 



*1714. C. fragilis, Bernh. Th. 



Woods and river banks. Ann Arbor, Allmend. Cat.; Flint; Hubbardston; northward to Lake 

 Superior, Whitney. 



546. ONOCLEA, L. 



1715. O. seiisibilis, L. Sensitive Fern. Th. 



Wet places. Abundant. 



*1716. O. Struthiopteris, Hoff. Th. 



Alluvial soil. Infrequent, 



547. WOODSIA, R. Br. 



1717. W. Ilveiisis, R. Br. N. & U. P. 

 N. E., Winch. Cat. ; Lake Superior, Whitney Cat. ; Lower Falls of the Quinnesec, -E. J. Hill, 



1718. W. hyperborea, R. Br. U. P. 



Keweenaw Co., F. 



1719. W. obtusa, Torr. U. P. 

 Rocky places. Not rare. 



1720. W. Oregaiia, D. C. Eaton. U. P. 

 Crevices of rocks south shore of Lake Superior, Dr. Bobbins in Gray's Manual. 



548. DICKSONIA, L'Her. 



1721. D. pilosiuscula, Willd. N. & U. P. 



Petoskey, Emmet Co., Winch. Cat. ; Keweenaw Co., F. 



549. OSMUND A, L. FLOWERING FERN. 



*1722. O. reg-alis, L. Flowering Fern. Th. 



Swamps. Common. 



*1723. O. Claytoniana, L. Th. 



Moist grounds. Common. 



*1724. O. ciimamomea, L. Cinnamon Fern. 



Swamps. Common. 



[W. GL.ABELL.A, R. Br. 



Occurs on the north shore of Lake Superior, and may be looked for in our district.] 



