PLANTS OP ONONDAGA COUNTY 9 



0. Claytoniana — Lin., 1753. (Osmunda interrupta 

 Michx, 1803.) Clayton's Fern. 

 Not common. Central pinnae fertile. Base and sum- 

 mit sterile. Jamesville and Phoenix Roads, Onondaga 

 Hill, Indian Reservation. May, July. 



POLYPODIACE/E— R. Br. 1810— Fern Fam. 



ONOCLEA— Lin., 1753. 



O. SENSIBILIS — Lin., 1753. Sensitive Fern. 



Common. Very much varied in form. A twice pin- 

 natified form, given by some botanists the varietal 

 name, 0. Obtusilobata. Others consider that an ab- 

 normal species. Waste places and roadsides. Sensitive 

 to frost. August, November. 



0. STRUTHiOPTERis — Hoffm, 1795. Ostrich Fern. 



Frequent along streams or low grounds. Jamesville 

 Road, August, 1895. Goodrich wild flower garden, 

 July, 1897. 



WOODSIA— R. Brown, 1811. 



W. ILVENSIS — R. Brown, 1811. Rusty Woodsia. 



Covered on underside with rusty chaff. Rare. Southern 

 and southwestern parts of Onondaga County. On ex- 

 posed rocks. Near Fabius, 1895. Beauchamp. 



W. OBTUSA— Torr, 1840. Blunt lobed Obtusa. 



Very rare. Exposed rocks. High elevation. Tully, 

 July, 1895. 



DENSTEADTIA— Und. 



(Dicksonia — Lin., 1753.) 



D. PUNCTILOBULA — Bernh, 1806, (Dicksonia punctilobula 

 A. Gray, 184-8. Dicksonia Pilosiuscula. Wild, 1809.) 

 Hay scented fern. Not common. Sporangia enclosed 

 in a fringed cup-shaped indusia. Rare here. Abun- 

 dant near Utica. Mont. George, June, 1896. 



