70 PretTz: FLorA OF LEHIGH COUNTY, PENNSYLVANIA 
little Lehigh and Cedar creeks it is frequent on limestone and as 
far as the vicinity of Jordan Bridge along the Jordan. On the 
shale outcrops along the Jordan it is not infrequent but less abun- 
dant. On the limestone and shale outcrops along the Lehigh 
River it is present rather abundantly not only in the county but 
as far as Easton in Northampton County and Phillipsburg in New 
Jersey. At the former place it may be seen growing on a wall 
along a street near the Central Railroad of New Jersey station, 
and at Lehigh Junction, Phillipsburg, it grows abundantly on 
walls enclosing the stairway to the overhead railroads. 
In the county it is also perfectly at home and often occupies 
chinks in the walls of abandoned limekilns, railroad abutments, 
etc. The manner in which it has occupied comparatively recently 
abandoned limestone quarries stamps it as a permanent resident 
in the county. 
It grows practically in shaded as well as open situations, and in 
exposed situations can often be found withered in seasons of pro- 
tracted drought. The size of the fronds is due to exposure and 
lack of moisture no less than peculiar situations that make a longer 
stipe necessary. Fertile fronds 7cm. (3+4) long and 2 cm. wide 
are not infrequent and fronds 4.1 dm. (1.6+2.5) long and 1.1 dm. 
wide have been collected. Has been collected well fruited on 
July 10. The species is evergreen. In severe cold weather the 
pinnules shrivel but are not dropped from the stalk. 
PHEGOPTERIS HEXAGONOPTERA (Michx.) Fée 
All of the writer’s records are from the South Mountains but 
it is likely that this species occurs in the vicinity of the Kittatinny 
Range as well as elsewhere. A record of P. A. Lantz for Saegers- 
ville, September 25, 1875, would mean shale formation, if the 
species was actually collected at that place. If the writer has seen 
it on shale or limestone the fact has escaped him. Itisa frequent 
and often abundant species in shaded and open situations on the 
South Mountains and appears equally at home in wet or drier 
situations. Sometimes it occurs in patches of pure association in 
the more open woods. Fronds 5.6 dm. (3.6+2) long and 2.3 dm. 
wide represent average luxuriance. One frond froma moist situa- 
tion, 7.2 dm. (4.6+2.6) long and 2.9 dm. wide, has been collected. 
