No. 14.] FLOWERING PLANTS AND FERNS. I4I 



The var. denudata Anders, (bared) occurs at Salisbury, 

 near Twin Lakes (J. R. Churchill & Bissell). 



Salix purpurea L. (purple). 



Purple, Bitter, Rose or Whip-cord Willow. 



Rare or local. Dry or wet open ground: Voluntown 

 (Harger & Graves), New London (Graves), Hartford, many 

 plants over a wide area (H. S. Qark & Bissell), Southington 

 and Berlin (Andrews & Bissell), New Haven (Eaton Herb.), 

 Seymour (Harger), Stafford and Winchester (Bissell), Salis- 

 bury (Mrs. C. S. Phelps & Bissell), Waterbury (A. E. 

 Blewitt) . April — May. Adventive from Europe. 

 Grown for basket rods. 



Salix incana Schrank (hoary). 

 Gray or Lavender Willow. 



Rare. Escaped from cultivation to a river bank at Hart- 

 ford, a few plants only (H. S. Qark). April — May. Fugi- 

 tive from Europe. 



POPULUS L. Poplar. Aspen. 

 Rapidly growing trees with soft, light wood, of little value 

 for timber, but an important source of wood-pulp and useful for 

 fuel in parts of the country where other wood is scarce. The 

 poplar of the lumberman is Liriodendron Txtlipifera, the Tulip 

 Tree. 



Populus alba L. (white). 



White or Silver-leaved Poplar. Abele. White-bark. 



Occasional. Escaped from cultivation to roadsides and 

 waste places. April — May. Naturalized from Europe. 



Often planted as an ornamental or shade tree, and some- 

 times to stop sand-blows. The bark is medicinal. 



Populus tremuloides Michx. (like Populus tremula, the Eu- 

 ropean Aspen). 



American or Quaking Aspen. Poplar. Popple. Quiver-leaf. 

 Trembling or White Poplar. Aspen. 

 Frequent. Woods, thickets and roadsides, more often in 



dry ground. April — May. 



One of the first trees to take possession of clearings. The 



bark is medicinal. 



