22 
S. pedicellaris Pursh. Deerfield, E. Tuckerman. 
discolor Muhl. Glaucous Willow. 
humilis Marsh. Prairie Willow. 
tristis Ait. Dwarf Gray Willow. 
sericea Marsh. Silky Willow. 
rostrata Richards. 
PURPUREA L. Purple Willow. Near Conway, H.G. Jesup; Glen- 
wood, Springfield. 
Populus [Tourn.] L. Posiat Aspen. 
alba L. White Poplar. Silver Leaved Poplar. 
tremuloides Michx. American Aspen. 
grandidentata Michx. Large-toothed Aspen. 
balsamifera L. Balsam Poplar. 
candicans Ait. Balm of Gilead. 
deltoides Marsh. Cottonwood. Necklace Poplar. 
NIGRA L. Black Poplar. Occasionally spreading by root suck- 
ers. var. ITALICA Du Roi. Rarely, if ever, spread- 
ing. 
MY RICACEAE 
Myrica L. 
Gale L. Sweet Gale. . Gill, E. H. Sharpe; Shutesbury, R. E. 
Torrey ; Belchertown, etc. 
carolinensis Mill. Bayberry. Wilbraham, E. Longfellow, Dr. 
W. H. Chapin.; Conway, etc. Much more common near 
the coast. 
asplenifolia L. Sweet Fern. 
JUGLANDACEAE 
Juglans L. Walnut. 
cinerea L. Butternut. 
nigra L. Black Walnut. Native in Amherst, etc., but rare in our 
range. 
Carya Nutt. Hickory. 
ovata (Mill.) K. Koch. Shagbark Hickory. 
alba (L.) K. Koch. Mocker Nut. 
glabra (Mill.) Spach. Pig Nut. 
cordiformis (Wang.) K. Koch. Bitter Nut. 
