128 Proceedings of the Ohio State Academy of Science 



8. Salix balsamifera (Hook.) Barr. Balsam Willow. 

 Usually a shrub but sometimes arborescent with a slender erect 

 stem. Leaves elliptic, ovate-oval, or obovate, thin, glabrous, 

 acute at the apex, rounded or subcordate at the base, glaucous be- 

 neath, 2-3 in. long, f-i^ in. wide, slightly crenulate-serrulate ; cap- 

 sule very narrow, acute. In swamps. Lab. to Alan, south to 

 Me., Mich., and Minn. 



9. Salix missouriensis Bebb. Missouri Willow. A tree 

 with small, appressed scales on the thin bark. Leaves lanceolate, 

 or oblanceolate, acuminate, finely serrate with minute gland- 

 tipped teeth, rounded or narrowed at the base, glabrous or nearly 

 so when mature, pale and glaucous beneath, 2^-5 in. long, ^-i in. 

 wide; capsule ovoid. Wood dark brown. On river banks and 

 in moist places. The closely related S. cordata is a shrub with 

 pale bracts and the leaves not whitish beneath. AIo., Kan., Neb., 

 and Iowa. 



10. Salix fluviatilis Nutt. Sandbar A\''illow. A shrub 

 or small slender tree usually forming thickets. Flowers can be 

 found for a long time. Leaves linear-lanceolate, acuminate, re- 

 m.otely denticulate with somewhat spreading teeth, short-petioled ; 

 2^-4 in. long; capsule ovoid-conic, finely silky when young, 

 glabrate in age. Along streams and ponds and in ravines, some- 

 times on high ground. Quebec to N. W. Terr., south to Va. 

 and Texas, Ohio. 



11. Salix discolor Muhl. Puss}' Willow. A shrub or 

 low tree in swamps or moist hill-sides. Leaves obovate, oblong 

 or oblanceolate, usually glabrous, glaucous and nearly white be- 

 neath, irregularly serrulate or nearly entire, slender-petioled, 

 1^-4 in. long ; capsule narrowly conic, tapering to a slender beak. 

 N. S. to Man., Del., Ohio and Mo. 



12. Salix bebbiana Sarg. Bebb Willow. A shrub or 

 sjTiall tree. Leaves elliptic, oblong, or oblong-lanceolate, spar- 

 ingly serrate or entire, dull green and puberulent above, pale and 

 tomentose beneath, nearly glabrous when very old ; capsule very 

 narrowly long-conic, twice as long as the filiform pedicel. In 

 dry soil along streams. Anticosti .to Hudson Bay and Br. Col., 

 south to N. J,, Ohio, Neb., and Utah. 



