194 . Rhodora [OCTOBER 
become so serious that a portion of the ground, covered by this 
plant, has been ploughed up, and Alfalfa (Medicago sativa L.) planted. 
[ know of no other place where this Euphorbia has so persistently 
spread to such an extent. The fact that fresh plants appear many 
rods from established areas seems to indicate clearly that the seeds are 
responsible for these new colonies, while such colonies rapidly increase 
by means of the rootstocks in which the plants abound. 
I have learned of but two new places where the plants develop 
fruit, these cases being interesting as showing the abundance of 
capsules where fruit is formed, while the fact that so few cases have 
come to my notice would seem to indicate the scarcity of fruiting 
areas, especially since attention has been previously called to the 
subject. Mr. W. Herriot of Galt, Ontario, kindly sent me in Novem- 
ber, 1911, some fine fruiting specimens of Fuphorbia Cyparissias L., 
collected by him in Galt on June 18, 1911. He wrote me several 
letters during the course of the year in regard to the species from which 
I will make extracts. On March 12, 1911, he says, “Regarding the 
fruiting of Euphorbia Cyparissias I have known the plant well for 
over 30 years, it being a common plant in old graveyards especially, 
but occasional by roadsides where it is very troublesome as a weed, 
being very difficult to eradicate. As to the fruiting I cannot speak 
with any certainty previous to 1910, my attention being drawn to its 
fruiting because I wanted to procure seed for the Department of 
Agriculture at Ottawa in their making up of extensive seed collections 
in which they are now engaged. I procured about one pint of seed 
altogether, and I would say that it fruits quite generally with us." 
In regard to the season of fruiting Mr. Herriot says under date of 
December 23, 1911, * Last year I collected the plants in full bloom on 
May 24, and the specimens I sent to you [in very ripe fruit] were 
collected June 18 of this year. On June 27 I collected about one half 
a pint of mature seed." The Shelburne plants were ripe on June 16, 
and on July 2 were rapidly losing their seeds. 
I am indebted to Mr. Robert A. Ware for the other instances of the 
fruiting of this species. His letter to me, dated from his home, The 
Warelands, Norfolk, Massachusetts, June 6, 1912, is so full of inter- 
esting detail that I venture to quote it in full. 
“You asked me for some notes on Euphorbia Cyparissias L. in fruit. 
Since you called attention, a few years ago, to the infrequency with 
which this plant is reported in fruit, I have examined such colonies of 
