92 Rhodora [APRIL 
and emptying into the Merrimac river. For some distance from the 
head of this stream the banks are covered with various mosses, but I 
have never found any of the Webera group, the brook is then joined by 
another little rivulet which has cut for itself a channel in the live sand 
some thirty feet in depth. These banks of wet sand are densely covered 
with Webera proligera (Lind.) Kind. From this place on, both banks 
of the brook are covered with this moss, although hardly any fruit 
can be found anywhere. It is easy to see how this wonderful multi- 
plication is brought about, for in the autumn one can find plenty of 
the peculiar bulbils, which grow on the stem of this moss near its 
apex, but in the spring these growths are mostly gone. In the win- 
ter season the banks are covered with ice and snow, which collect 
the bodies, carry them along the stream and deposit them in the mud 
farther down, thus producing plants all along. — J. W. HUNTINGTON, 
Amesbury, Massachusetts. 
Two Woor-wAsTE PLANTS AT LAWRENCE, MASSACHUSETTS. — In 
connection with the article in the February number of the RHODORA 
by Mr. Emile F. Williams noting the finding of two species of Ero- 
dium in Tewksbury, the following may be of interest. 
On June 14, 1900, I found growing within two feet of a pile of 
wool dust at the Arlington Mills, Lawrence, a single plant of Clarkia 
pukhella, Pursh, bearing one finely-developed flower. A careful 
hunt failed to reveal any more plants of this species. 
This plant, if I mistake not, is a native of Oregon and California, 
and its presence here is easily accounted for, since the mill uses large 
quantities of so-called Territory wool from Oregon, Montana, Idaho, 
etc. 
On June rsth I found in the same place a profusely flowering 
plant of Gilia androsacea, Steud., the lilac corolla with dark eye 
causing it to be easily identified. This, also, is a western plant, as 
are all of the genus. 
There were also several species of Compositae not native, but I 
have not as yet identified them. The coming season I hope to make 
a study of this special locality. — Jonn A. COLLINS, Jr., Lawrence, 
Massachusetts. 
Vol. 3, No. 27, including pages 41 to 66 and plate 23, was issued 5 March, 
1901. 
