No. 14.] FLOWERING PLANTS AND FERNS. 23 



Southington (Andrews & Bissell), Cheshire (D. C. Eaton), 

 New Haven (Harger). July. 



Aspidium Boottii Tuckerm. 

 Dryopteris Boottii Underw. 



Rare or occasional. Wet woods and shaded swamps, usu- 

 ally growing with Aspidium cristatum. July. 



Intermediate in form and formerly considered a hybrid 

 between Aspidium cristatum and Aspidium spinulosum, var. 

 intermedium. 



Aspidium cristatum (L.) Sw. (crested). 

 ■Dryopteris cristata Gray. 

 Crested Shield Fern. 



Occasional or frequent. Wet woods and shaded swamps, 

 more often in sandy soil. July. 



A hybrid between this species and Aspidium marginale 

 occurs at East Lyme (Miss A. M. Ryon & Graves), Water- 

 ford (Graves), Granby (I. Holcomb), and Salisbury (Mrs. 

 C. S. Phelps). 

 Aspidium cristatum (L.) Sw., var. Clintonianum D. C. Eaton. 

 Dryopteris cristata Gray, var. Clintoniana Underw. 

 Clinton's Shield Fern. 



Rare or occasional. Wet woods and shaded swamps. 



July. 



This variety appears to hybridize with Aspidium marginale 

 and also with the typical form of the species. 



Aspidium spinulosum (O. F. Miiller) Sw. (with small spines). 

 Dryopteris spinulosa Kuntze. 

 Spinulose Shield Fern. 



Moist or wet woods. Usually rare or local but occurring 

 throughout the state. Late June — early July. 



This species and its varieties are desirable for cultivation 

 in shaded places and also grow well indoors in the fernery. 

 Aspidium spinulosum (O. F. Miiller) Sw., var. intermedium 



(Muhl.) D. C. Eaton (intermediate). 

 Dryopteris spinulosa Kuntze. var. intermedia Underw. 



Occasional or frequent. Moist woods and on shaded rocks. 

 Late June — early July. 



