Vol. $8 No. 2 
BULLETIN 
OF THE 
TORREY BOTANICAL CLUB 
FEBRUARY, IogII 
Flora of Lehigh County, Pennsylvania—l 
. 
HarRoLp W. PRETZ 
INTRODUCTION 
In recent years, the phase of botany having to do with plant 
distribution in all its relations has had such generous attention 
that while formerly local lists were received with a certain degree 
of tolerance, now they are not only sought for but desired. Botan- 
ical literature is full of treatments of the larger areas, and generous 
acknowledgment to local floras is the usual rule. ' In this paper and 
what is expected to follow later under the same head, the writer 
desires to record for the benefit of those who can use them certain 
observations with regard to the flora of that portion of his working 
field with which he is most intimate. 
Lehigh County is one of a group of counties in Pennsylvania 
which share the Kittatinny Mountains as a boundary. The 
northern boundary of the county follows the crest of this range 
westward for a distance of sixteen miles to corner with Berks. 
The western boundary is a straight line of twenty-nine miles 
extending south by east and is shared in common with Berks and 
Montgomery. On the south is Bucks County. On the east, 
Lehigh County shares with Northampton the Lehigh River as far 
as Catasauqua. The Second Geological Survey of Pennsylvania 
(1:D 3) well characterizes the county as ‘‘a nearly rectangular 
figure leaning northwest.” It includes an area of three hundred 
and sixty-four square miles. 
The Kittatinny Range, also known as the Blue Mountains, 
[The BuLetin for January, tort (38: 1-44. pl. 1) was issued 15 F rorr.] 
