170 Rhodora [SEPTEMBER 
Cod, I have collected everything I came across, unless I was sure I had 
already collected it from the same locality. As regards grasses, 
sedges etc., my ignorance is so thorough that I have seldom refrained 
from collecting, and at the end of the season I have turned over the 
whole lot to the Gray Herbarium. In each case Prof. Fernald has 
been good enough to name the plants, and each season some have been 
found that were growing outside of their recorded range. It only 
shows that one need not be a specialist to contribute to our knowledge 
of the flora of the region. The wayfaring man, even in the extreme 
case mentioned in the scriptures, will not err if he collects freely, and 
sends his specimens to Prof. Fernald. 
POTENTILLA TRIDENTATA Ait. Sandy plain, Eastham, May 30, 
1913. This is on a different footing from the two species already 
mentioned, as it is an old acquaintance of mine, with many pleasant 
associations. I first saw it at Bath, Maine, in August, 1880, where 
I had to stop over Sunday at a hotel there, in consequence of a sudden 
and unannounced change of time by a local steamer; I feel sure that 
every reader who has travelled on the Maine coast will recall some 
similar experience of his own. Then when Mr. Dame and myself 
were compiling the Flora of Middlesex County, we found this species 
on the summit of Mount Watatic. The boundary line between 
Worcester and Middlesex counties crosses this summit, and Mr. 
Dame, Dr. C. W. Swan and myself went all over the open ground on 
our hands and knees, until we were sure that the plant, not then in 
bloom, was actually on the Middlesex side of the line. At the time 
the Flora was published, this station was the only one in the county, 
but the plant was afterwards found at Wilmington. Though I have 
seen it many times since, it always bas a special interest for me, but 
nothing could have been more unexpected than its occurrence along 
a "road" (three deep ruts in the open field) near the Bay shore of 
Eastham, about half a mile northwest of North Eastham station. 
The colony extended for some rods along the road, and the plants were 
in full flower, with abundant seed capsules from last year. The range 
is given in the Manual as Lab. to e. N. E., where common in exposed 
rocky or gravelly situations, N. J., and southward on the upper 
Alleghenies; also westward, chiefly along the Great Lakes. The 
Wilmington station is probably the nearest to Eastham. 
Nortu EASTHAM, MASSACHUSETTS. 
