Class XXII. Order III. 365 



acute, black, hairy ; germs subsessile, lanceolate, downy ; 

 stigma two parted. 



This willow with dark coloured brandies, and a whitish under- 

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



SALIX VITELLINA. L. Yellow Willow. 



Leaves lanceolate, acuminate, closely serrate, smooth 

 above, paler beneath ; stipules none ; aments nearly 

 cotemporary, cylindrical, the scales ovate-lanceolate, 

 pubescent outside ; germs sessile, ovate-lanceolate, 

 smooth, stigmas subsessile, two lobed. 



This tree, distinguished by the yellow bark of its twig?, 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, en- 

 tire, silken underneath ; branches virgated ; style elon- 

 gated. Sm. 



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. 



TR1J1NDRM. 



424. EMPETRUM. 

 EMPETRUM NIGB.UM. L. Crowberry. Crakeberry. 



Stems procumbent. 



A prostrate shrub, with small, dense, evergreen foliage, like 

 that of the heaths. Leaves imbricate, scarcely petioled, oblong, 

 obtuse, revolute at the edge. Flowers axillary, very small, red- 

 dish. Berry roundish, black. On the summits of the White 

 mountains. June. 



