112 



METROPOLITAN PARK FLORA. 



A. acrostichoides, Swz. 



Rocky woodlands. B*, frequent: — M*, common:— £, 

 occasional. A form near, but not quite deeply enough cut for 

 a tvpe of var. incisum, Gray, was collected in B. 



CYSTOPTERIS, Benin. Bladder Fern. 



C. fragilis, Benin. 



Moist rocks and shaded cliffs; occasional. M*, frequent ; 

 crevices of moss-covered rocks, Virginia Wood ; rocky border 

 of Spot Pond, etc. 



ONOCLEA, L.f 

 O. sensibilis, L. Sensitive Fern. 



Common everywhere in low meadows and thickets. B * and 

 M, reported as common in meadows and damp woods. Doubt- 

 less common in 8 and BB. 



WOODSIA, R. Br. 

 W. Ilvensis, R. Br. 



Occasional on exposed ledges. B*, rare :— M, frequent on 

 rocks in upland woods. 



W. obtusa, Torr. 



Rocky woods, crevices, and pockets of ledges; raie. Jf*, 

 occasional ; W. side of S. Reservoir ; side of Bear Hill, etc. 



DICKSONIA, L'Her. 



D. pilosiuscula, Willd. 



Common in shady woodlands and low grounds. B*, com- 

 mon : — M* and S, frequent. 



OSMUNDA, L. Flowering Fern. 

 O. regalis, L. Flowering Fern. 



Common in low woodlands. B* and M, common:— S, 

 damp woods. 



t The noble Ostrich Fern, 0. Struthiopteris, Iloffm., formerly grew 

 very near the present limits of the Pells, and should he introduced 

 into all the Reservations. 



