178 ! Rhodora [SEPTEMBER 
. humilis Marsh. Prartrre Win,Low. Rather common. 
S. rostrata Richards. Common. 
POPULUS. 
P. arpa L. WnurirE PoPLAR. SILVER-LEAVED POPLAR. ABELE. 
Naturalized at Brooklin Center. 
P. tremuloides Michx. American AsPEN. Rather common. 
P. grandidentata Michx. LARGE-TOOTHED AsPEN. Rather com- 
mon. 
P. balsamifera L. Barsam POPLAR. Several trees planted in 
various parts of the township, and these have reproduced by 
seedlings. 
P. canpicans Ait. Baim or GILEAD. Apparently introduced, but 
naturalized. 
MYRICACEAE. 
MYRICA. 
M. Gale L. Sweer GALE. Common in wet places. Harriman 
Point; Central Tract. 
M. carolinensis Mil. Baysperry. Common. 
M. asplenifolia L. Sweer Fern. Common. 
BETULACEAE. 
BETULA. 
B. populifolia Marsh. Wmurrk or Gray Bırcu. Common. 
B. alba L. var. papyrifera (Marsh.) Spach. PAPER or WHITE 
BirncH. Common. 
ALNUS. 
A. mollis Fernald. Downy GREEN ALDER. Common, especially 
near the coast. The Alnus viridis of the Mt. Desert Flora 
probably includes this species. 
A. incana (L.) Moench. SPECKLED on Hoary ALDER. 
FAGACEAE. 
FAGUS. 
F. grandifolia Ehrh. Brrecu. Rare. Harriman Point. 
