1922] | Long,—Additions to the Flora of Knox Co., Maine 181 
NOTABLE ADDITIONS TO THE FLORA OF KNOX 
COUNTY, MAINE. 
C. A. E. Lone. 
During the season of 1921, several collecting trips to various 
parts of Knox County were productive of much interesting and 
valuable material. 
From the island of Matinicus, which had already given us many 
noteworthy species, we have the following: 
SCIRPUS CESPITOSUS L., var. caLLosus Bigel A northern rush, 
growing sparingly in open peat bog. 
Rosa ACICULARIS Lindl. This is the third station for this rose east 
of the Connecticut River. There are two distinct colonies of it 
growing in a dry worn-out field. 
TRIENTALIS BOREALIS Raf. The rare form with aerial runners, 
like the plants described by Miss R. S. Smith in Ruopora, iii. 216, 
t. 34 (1901). Among brush heaps in a recent clearing. 
CIRSIUM PUMILUM (Nutt.) Spreng. Probably the eastern limit for 
this thistle. d 
ANAPHALIS MARGARITACEA (L.) B. & H., var. OCCIDENTALIS Greene. 
Hitherto unknown in Maine from southwest of Washington County. 
Growing.in a recently burned tract. 
The * Lily Pond" and vicinity is a botanically rich district in the 
towns of Rockport and Camden. Its waters, shores, and the lands 
contiguous ylelded the following species, in addition to those that 
I have already noted in RHODORA. 
ELODEA CANADENSIS Michx. New to the state. This is the true 
E. canadensis, which is rare in New England (see St. John, RHODORA, 
xxii. 27). Great masses of it grow in the pond. 
SALIX PENTANDRA L. Naturalized on the shore. Not recorded 
from Maine. e 
Rusus ANDREwSIANUsS Blanchard. Not recorded from Maine, 
though collected in 1916 at Orono by Fernald & Long. Rocky bank 
near shore. 
LowrcERA Morrow Gray. A commonly cultivated shrub, 
thoroughly naturalized in a dry rocky field. Also collected at Orono 
in 1916 by Fernald & Long. Not recorded from the state. 
BrpENs Becki Torr. Rare in Maine. 
