310 GEOLOGICAL SURVEY OF NEW JERSEY. 
Tweedy. Mercer: Princeton—Peters; and common in rocky 
places in the northern counties. A form with deeply lobed pin- 
nules, approaching var. elegans, Robinson, was collected on Little 
Snake Hill, by Leggett. 
A. acrostichoides (Michx.), Sw. 
In woods. Common in the northern and middle counties. 
Frequent or occasional southward. 
Var. Schweinitzii (Beck), B.S. P. (Var, incisum, Gray.) 
Bergen :—Woolson ; Fort Lee—Miss Knight. Essex : 
Montclair Heights—Britton. Morris: Millington and Morris- 
town—L. Schumacher; near Newfoundland—Britton. War- 
ren: Low’s Hollow—Porter. Mercer: Princeton—Peters. 
Burlington: Below Bordentown—Stowell. 
CYSTOPTERIS, Bernh. 
Bladder-fern. 
C. bulbifera (L.), Bernh.. 
On limestone rocks. Warren: Marble Hill—Porter. Sus- 
sex: Newton—Miss 8. D. Thompson; Sussex Mills and near 
Ogdensburg, and along Wawayanda Creek near the State line— 
Britton; near Andover—J. D. Reynolds. 
C. fragilis (L.), Bernh. 
In moist places. Monmouth: Freehold—Willis. Mercer: 
Princeton—Peters; Somerset Junction—Stowell. Hudson: 
Weehawken—Ruger ; and frequent in rocky places in the north- 
ern counties. 
ONOCLBA, L. 
Sensitive Fern. 
O. sensibilis, L. 
In low grounds. Common throughout the State. 
O. Struthiopteris (L.), Hoffm. (Struthiopteris Germanica, Willd.) 
Sussex: Along the Delaware River below Dingman’s Ferry, 
and Warren: In a meadow along Van Campen’s Creek—Rusby 
& Britton. Hunterdon: Rosemont and Bull’s Island—Best ; 
Frenchtown—Porter ; Lambertville—Apgar. Burlington : 
Crosswicks Creek, rare—E. D. Sturtevant. 
