CATALOGUE OF PLANTS. 39 



Q. coccinea, Wang., var. tinctoria, Gray. (Black Oak.) North Charles- 

 town, Flint ; and in a few towns in both states. 



Q. rubra, L. (Red Oak.) The most abundant species. Other species on 

 our borders may yet be found within our limits. 



Castanea, Toum. Chestnut. 



C. sativa, Mill., var. Americana. (C. vesca, var. Gray's Man., 5th ed.) 

 Infrequent. Claremont is nearly the northern limit ; frequently planted 

 and growing well in sheltered places. 



FagUS, Toum. Beech. 



F. ferruginea, Ait. Varies greatly ; wood light colored or reddish, as grow 

 ing on dry or moist ground. iVbundant. 



Order 78. SALICACEJE. Willow Family. 



Salix, Tourn. Willow. 



S. nigra, Marsh. (Black Willow.) The only native species tree-like in- 

 size. 



S. lucida, Muhl. (Shining Willow.) Wet places; very handsome shrub. 



S. FRAGiLis, L. (Brittle Willow.) Large tree; from Europe ; early intro- 

 duced. 



S. ALBA, L. (White Willow.) Both this and the above with many vari- 

 eties, and hybrid forms. 



S. Babylonica, Tourn. (Weeping Willow.) From Asia, and here known 

 only in the pistillate form. 



S. longifolia, Muhl. (Long-leaved Willow.) Banks of the Conn, river at 

 Lebanon, N. H., and Windsor, Vt. Not very common. 



S. rostrata, Richard. (S. livida, Wahl., var. occidentalis. Gray.) — (Beaked 

 Willow.) Common. 



S. discolor, Muhl. (Glaucous Willow.) Very common everywhere. 



S. humilis. Marsh. (Prairie Willow.) Dry ground; common. 



S. tristis. Ait. (Dwarf Gray Willow.) With the above. 



S. sericea, Marsh. (Silky Willow.) Not rare. 



S. petiolaris. Smith. With the preceding. 



S. PURPUREA, L. (Purple Willow.) From Europe; used for basket-work. 



S. cordata, Muhl. (Heart-leaved Willow.) Very common and variable. 



[In addition to the above, other species may occur on our mountains and 

 elsewhere. Numerous hybrid forms have been noted, making the precise 

 determination of the species at times impracticable. Salix fragilis and 

 S. ALBA are much intercrossed. S. discolor and S. huiMILis hybridize, 

 and small forms of the latter are not readily distinguished from S. tristis. 

 See description of Genus in Manual, 6th ed. by M. S. Bebb.] 



Populus, Tourn. Poplar. Aspen. 



[P. ALBA, L. (White Poplar. Abele Tree.) Cultivated from Europe, 

 and in the pistillate form only.] 



P. tremuloides, Michx. (American Aspen.) Everywhere common. 

 P. grandidentata, Michx. (Great-toothed Poplar.) Frequent. 



