142 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Populus grandidentata Michx. (large-toothed). 

 Large-toothed Aspen. Poplar. Popple. 



Frequent. Moist or dry woods and clearings, more often 

 in rocky ground. April — May. 



Populus heterophylla L. (various-leaved). 

 Swamp or Downy Poplar. 



Rare or local. Wooded swamps and borders of ponds : 

 Salem and Montville (W. A. Setchell, H. C. Beardslee, 

 Graves), Middletown (Graves, Bissell, Andrews), Branford 

 and Southington (Bissell & Andrews), Guilford (G. H. Bart- 

 lett). East Haven and Southbury (Harger). May. 



Populus balsamifera L. (balsam-bearing). 

 Balsam Poplar. Tacamahac. 



Local. River banks, wet woods and roadsides, usually as 

 an escape from cultivation: Southington (H. Whitney), Mil- 

 ford (Eames & C. C. Godfrey), Wilton (Eames & G. P. Ells), 

 Sherman, New Milford and Kent (E. H. Austin, C. K. 

 Averill). Apparently native at Norfolk (H. S. Clark & Bis- 

 sell). April — May. 



Populus candicans Ait. (white and shining) . 

 Populus balsamifera L., var. candicans Gray. 

 Balm of Gilead. 



Rare or occasional. Roadside thickets and fence-rows as 

 an escape from cultivation. April — May. In Connecticut 

 naturalized, probably from Asia. 



Occasionally planted as a shade tree. The leaf-buds and 

 bark are medicinal, the first named having been much used in 

 former times as a household remedy. 



Populus deltoides Marsh, (triangular; referring to the shape 



of the leaves). 

 Populus monilifera Ait. 

 Cottonwood. Necklace Poplar. 



Borders of streams and in wet ground. Frequent in the 

 valleys of the Connecticut, Farmington and Housatonic 

 Rivers ; rare or occasional elsewhere. April — May. 



A strong, rapidly growing tree, often planted as a shade 

 tree, and on the western prairies for wind-breaks. 



