392 CLASS XXII. ORDER II. 



Aments appearing before the leaves, small-oval. Fruit pubes- 

 cent, with long, silken dovt'n. 

 Salix discolor. Willcl. Bog Willow. 



Leaves oblong, rather obtuse, smooth, remotely ser- 

 rate, entire at the end, glaucous underneath; stiptiles 

 deciduous, lanceolate, serrate ; aments nearly cotem- 

 porary, diandrous, oblong, downy, the scales oblong, 

 acute, black, hairy; germs siibsessile, lanceolate, 

 downy ; stigma two parted. 



This willow with dark colored branches, and a whitish under- 

 side to the leaves, grows in wet swamps at Dedham. — April. 



Salix vitellina. L. Yelloic Willow. 



Leaves lanceolate, acuminate, closely serrate, 

 smooth above, paler beneath ; stipules none; aments 

 nearly cotemporary, cylindrical, the scales ovate-lan- 

 ceolate, pubescent outside; germs sessile, ovate-lan- 

 ceolate, smooth, stigmas subsessile, two lobed. 



This tree, distinguished by the yellow bark of its twigs, and 

 now become extremely common in all soils, was probably first 

 introduced from Europe. — May. 



Salix viminalis. L. Osier. Basket Willow. 



Leaves linear-lanceolate, very long, acuminate, 

 entire, silken underneath ; branches virgated ; style 

 elongated. iSm. 



This is one of the most beautiful species, remarkable for its 

 long, slender, flexile twigs, and the silken, silvery pubescence 

 which covers the under side of the leaves. — In swamps, at Dan- 

 vers and elsewhere. — May. 



Salix repens. ? L. Creeping Willow. 



Leaves elliptic-lanceolate, entire, acute, smooth, 

 silken underneath ; stem prostrate. 



A humble species, as the name implies. The stems are pro- 

 cumbent, woody, spreading, and throwing out roots. Leaves on 



