220 Rhodora [NOVEMBER 
grasses and low plants in the areas that it covers. See note under 
Linaria canadensis. 
Cirsium lanceolatum (L.) Hill. A few vigorous plants scattered 
over the area. 
Cirsium arvense (L.) Scop. Several plants in the center of the 
marsh on the border of a ditch. 
Cichorium Intybus L. Occasional throughout. 
Leontodon autumnalis L. Occasional throughout, especially where 
the Juncus Gerardi has been cut. “A very vigorous plant, or two 
or three plants matted together, on the marsh at the south end. 
The scapes, which spread out along the ground in a circle and rose 
erect in the center, were 2 feet, 93 inches long. The plant was in 
full flower." Journal, Sept. 7, 1913. 
Taraxacum officinale Weber. Extremely abundant over the entire 
area, growing freely over the beds of Juncus Gerardi and elsewhere. 
“I observed two plants on the marsh at the south end. They 
were enormous. The one from which I took leaves and stems was 
30 inches in diameter, the scapes were 2 feet high, and the plant 
was a solid mass of leaves." Journal, Aug. 31, 1912. 
Sonchus arvensis L. Several stations over the marsh, one large 
area at the south end, and a vigorous flowering patch by the river 
about midway north and south. 
Sonchus oleraceus L. Abundant throughout, over the densely 
compact grassy areas as well as in more open soil. In many cases the 
auricles of the clasping base of the leaves were rounded but the akenes 
were invariably wrinkled transversely. 
Lactuca scariola L., var. integrata Gren. & Godr. Especially abun- 
dant in the southern portion, growing densely and very tall and 
vigorous. I measured one plant, 6 feet, 10 inches high, and it stood 
up but little above the rest. The dense growth of this species has 
pretty well killed out the grasses and low growth in the areas occupied 
by it. See note under Linaria canadensis. 
Lactuca canadensis L. Occasional throughout. 
The plants enumerated above are in my herbarium. In the veri- 
fication of a number of forms I have been assisted at the Gray Her- 
barium. The following short list includes species that I collected 
and verified but did not preserve, as at the time I was not intending 
to carry out this work. 
