188 THE CORRESPONDENCE OF SCHWEINITZ AND TORREY 
Justicia pedunculosa. Capt. Leconte maintains that the southern 
pedunculosa (which I have never seen) is very different from 
this—which is very common on the Susquehannah at Harris- 
b[urg], found in full flower beginning of July, 1823. ; 
Utricularia setacea—our Salem N. C. specimens are most generally 
2-flowered. 
Utricularia purpurea—lI long to see. 
Lycopus Europaeus B angustifol. Do you really think that the 
Lycopus europaeus which you kindly sent me, & which grows 
here plentifully—is the same plant with L. angustifolius? 
This I have never’found branching, or at least only at the 
base, & then it sends up long stalks often 4 or more feet high, 
with leaves all alike. The europaeus you sent me is certainly 
not different from the European specimens. I found a very 
curious tall branching one on the Muskingum which agrees 
very well with Elliott’s simwatus—& European specimens of 
exaltatus—& differs entirely from europaeus. 
I have no doubt the L. uniflorus of Muhlenberg is not a 
separate species—possibly the Canadian plant of Mx. may 
be different. 
Monarda didyma; of this I found fine specimens in Ohio very near 
the Pennsylv. line—and most splendid ones of Pursh’s 
Kalmiana branching exceedingly on the Laurel mountain, 
Pennsylv. I agree with you that there is no specific dif- 
ference. 
The M. punctata so extremely common in N. C. I have not 
met with here, the M. hirsuta is found on the Allegany moun- 
tains. The latter is called Horse mint in Ohio, where it is a 
great nuisance in wheat and rye fields, communicating its 
taste & smell to the grains. 
Salvia Claytoni—have you seen that plant? & where can it be got? 
Circaea lutetiana 8 canadensis. I have not seen here—it is rare 
in N. Carol. but common on the west side of the mountains in 
Penns.’ & Ohio.—The species which grows here plentifully 
is the C. intermedia of the German botanists—to be sure the 
specific difference is not great & consists in cordate opake 
leaves—& smoothness—After all I think there are but two 
real spec. C. lutetiana & C. alpina. 
