82 Rhodora [Max 
POLYPODIACEAE. 
POLYPODIUM. 
P. vulgare L. Dry rocks and ledges, common. 
PHEGOPTERIS. 
P. polypodioides (L.) Fée. Damp rich woods; occasional, especially 
northward. 
P. hexagonoptera (Michx.) Fée. Rich open woods, not common. 
All reports are from the central part of our territory. 
P. Dryopteris (L.) Fée. Rich especially coniferous woods; occasional 
in Essex County, but rare elsewhere; not reported south of 
Needham. 
ADIANTUM. 
A. pedatum L. Rich deciduous woods; generally distributed, but 
only locally abundant. 
PTERIS. 
P. aquilina L. Dry open woods and uplands, common. 
WOODWARDIA. 
W. virginica (L.) Sm. Wet woods and peat-bogs, sometimes in 
water; frequent. 
W. areolata (L. Moore. (W. angustifolia Sm.) Swamps and 
wet woods; frequent within ten miles of tide-water, the stations 
often extensive. 
ASPLENIUM. 
A. Trichomanes L. Dry ledges; frequent, but never abundant in 
our range. 
A. platyneuron (L.) Oakes. (A. ebenewm Ait.) Rocky soil and ledges 
throughout. 
Var. serratum (E. S. Miller) BSP. One specimen, collected in 
Malden by Mr. George E. Davenport in 1872 and identified 
by Dr. Asa Gray, is now in the Gray Herbarium; and another, 
from Melrose, is in the Davenport Collection. 
