No. 14.] FLOWERING PLANTS AND FERNS. 21 



Meriden (D. C. Eaton), Southington (J. N. Bishop), Berlin 

 (H. W. Cowles), Avon (I. Holcomb), Salisbury (F. Rundle). 

 Aug. 



Asplenium acrostichoides Sw. (like Acrostichum, a genus of 



tropical ferns). 

 Asplenium thelypteroides Michx. 

 Silvery Spleenwort. 



Woods and ravines in moist rich soil. Occasional near the 

 coast, becoming frequent northward. Aug. 



Asplenium Filix-femina (L.) Bernh. (female fern). 

 Lady Fern. 



Common. Woods, thickets and fence-rows. Late July — 

 early Aug. 



A very variable species with many described forms, some of 

 which seem to be caused by differences in the soil, exposure 

 or habitat. The rootstock is medicinal, and is used as a sub- 

 stitute for that of the Male Fern. 



CAMPTOSORUS Link. Walking Leaf. 

 Camptosorus rhizophyllus (L.) Link (with rooting leaves). 



Walking Leaf. Walking Fern. 



Shaded ledges, preferring limestone, but growing also on 



granite, sandstone or trap. Found throughout, but rare or 



local over most of the state, becoming frequent in the limestone 



district of northwestern Connecticut. July — Aug. 



Plants having the lower auricles of the fronds elongated 



like the tip have been found at Southington (H. C. Bigelow), 



Hamden, at Mt. Carmel (D. C. Eaton), and Salisbury (Mrs. 



C. S. Phelps). 



POLYSTICHUM Roth. 

 Polystichum acrostichoides (Michx.) Schott (like Acrosti- 

 chum, a genus of tropical ferns). 



Aspidium acrostichoides Sw. 



Dryopteris acrostichoides Kuntze. 



Christmas Fern. 



Common. Woods and shaded banks or ledges. July. 

 The van incisum Gray (cut or notched), van Schwei- 



nitzii Smallj Aspidium acrostichoides Sw., var. incisum Gray, 



