1907] Rand,— Arceuthobium pusillum at Mt. Desert 75 
Claytonia Virginica L. A number of large colonies in a hardwood 
swamp. 
Polanisia trachysperma T. & G. A waif from the west but growing 
abundantly on the gravelly banks of the Salmonkill at Lime Rock. 
Lythrum alatum Pursh. A large colony on a dry hillside not far 
from Twin Lakes. 
Vaccinium Canadense Richards. Found. by Mr. Weatherby of 
East Hartford in one of the mountain swamps. 
Polemonium Van Bruntiae Britton. Three vigorous plants in a 
swamp bordering a lake. Seems to be native. 
Hydrophyllum Virginicum L. In thicket along set-backs from the 
Housatonic river. 
Séutellaria parvula Michx. Wet meadow near Twin Lakes. 
ORRA PARKER PHELpPs, Chapinville, Connecticut. 
ARCEUTHOBIUM PUSILLUM AT Mr. DẸSERT.— Since the discovery 
of the Dwarf Mistletoe in abundance on Isle au Haut in East Penob- 
scot Bay I have seen no reason why it should not occur on Mt. Desert 
as well, and have, therefore, from time to time made careful search 
for it in the endeavor to extend its range eastward along the coast. 
I met with no success in my examination of its most common host- 
plant, the Swamp Spruce (Picea nigra Link). Witches’ brooms, 
to be sure, were often met with, but all appeared due to some other 
cause. I, therefore, began to think that the Island was free from this 
destructive but interesting plant. In August, 1906, however, just 
back of the precipitous cliff of Great Head on Frenchmans Bay a 
thriving colony of Arceuthobium was found at last. At the time it 
was unfortunately impossible to make careful observations of the 
extent of this colony, but judging from the general appearance of the 
spruces it had been long established. The host-plant here proved, 
in every case observed, to be the White Spruce (Picea alba Link), 
the most characteristic spruce of the rocky shores of the region. 
The facts observed in regard to the dwarf mistletoe and this host 
were practically the same as those mentioned by Dr. von Schrenk 
as occurring under the same conditions on Monhegan Island and the 
neighboring mainland, published in RHopora (ii. 2, 1900), so any 
repetition is unnecessary. One observation, however, made from 
these Mt. Desert specimens I speak of here because, so far as I know, 
