FERN Fiora or NORTHEASTERN Iowa 99 
in Allamakee County by Mr. Ellison Orr, who reports 
that the species is abundant in rich soil at the foot of 
bluffs along the Mississippi River at Waukon Junction 
and north of Lansing, Iowa, also north of McGregor 
and near Bulah, Clayton County; there are also oc; 
casional plants along Village creek and Oneota river, 
in Allamakee County, in suitable localities. The species 
has also been collected in Dubuque County. 
Woopsta oprusa (Spreng.) Torrey. My specimen 
from Allamakee County was collected by Mr. Orr, 
who found it growing on great fragments of rock at 
the foot of a bluff one-half mile east of Ion, Iowa, on 
Yellow river. The species has also been found in 
Winneshiek County. 
Woopsta invensis (L.) R. Br. Professor B. Shimek 
reports finding this species in two localities northeast 
from Hesper, Winneshiek County, Iowa. 
Woopsta scoputina D. C. Eaton. In 1900 Mr. 
Herbert Goddard, of Decorah, Iowa, sent me a speci- 
men found nearby, which I at the time reluctantly 
referred here, but on further examination I am inclined 
_ to consider it the preceding species. 
Cysropreris FRAGILIS (L.) Bernh. (Filix fragilis (L.) 
Underwood.) Rich calcareous or moist soil in woods; 
common; Winneshiek, Allamakee, Clayton, and Du- 
buque Comte: 
CYSTOPTERIS BULBIFERA (L.) Bernh. (Filix bulbifera 
(L.) Underwood.) Rich caleareous soil; common; Win- 
neshiek, Allamakee, Clayton, and Dubuque Counties. 
AspipiuM GotpiANuM Hook. (Dryopteris goldiana 
(Hook.) A. Gray.) Winneshiek and Allamakee Coun- 
ties, in rich woodsy soil in timber growing on bluff 
sides near Decorah and south of Waukon Junction 
and north of Lansing, and other similar localities. The 
Species is rather rare even in localities where found. 
ASPIDIUM THELYPTERIS (L.) Sw. (Dryopteris thelyp- 
feris (L.) A. Gray.) Winneshiek and Allamakee Coun- 
