176 Rhodora [OCTOBER 
the railroad, just north of the south-bound station, growing on the 
edge of the railroad ballast and on the lawn turf, as well as in neglected 
spots between the tracks. At Doylestown (ten miles beyond Lans- 
dale) it was again seen. Here it was noted as very common in the 
railroad yards by the station — at times scattered but often in close, 
solid colonies. In parts of the town it was found to be a not infre- 
quent weed, occurring on the pavement- and the gutter-borders of 
the smaller side-streets. During the day the species was mentioned 
to Dr. Fretz and its characters described. Below Carversville his. 
discriminating glance detected the plant along the roadside, and near 
Lumberville a great abundance of it was found locally in an exsiccated 
roadside gutter. 
Most of my field work during 1917 being concentrated upon the 
Middle District of the southern half of New Jersey, a greater number 
of stations have been noted from this area than elsewhere about Phila- 
delphia. Nearly all of these localities are so definitely associated 
with the railroads that it will not be inappropriate to group them in 
such connection. 
To the north, observations were made at Bordentown around 
the Pennsylvania Railroad station. E. peregrina was recorded as 
frequent in this immediate vicinity, occurring chiefly among the 
cinders upon freight sidings and at the ends of several short spurs used 
by the shifting-engines — in general on the less used tracks which do 
not carry the through trains of the passenger service, and which 
accordingly are allowed to become weedy. Being plentiful about the 
freight station its occurrence upon the adjacent roadsides was readily 
anticipated. 
Along the main line of the Pennsylvania extending eastward from 
Camden to the coast the species was observed at a number of widely * 
separated localities. 
At Masonville (about fifteen miles out of Camden) in the immediate 
vicinity of the railroad station, the freight station, and the wagon 
road, E. peregrina was found to be very abundant. There is a lengthy 
siding here and on the spot where freight cars are commonly dropped 
and teams drive up, so dominant was the species that, when seen in 
vigorous, fresh growth, at a distance the ground between the ties and 
near by presented the appearance of a lawn — and essentially all of 
the greenness was due to this species. 
At Pemberton, over a third of the distance across the state, a few 
