CLASS XXII. ORDER II. 391 



The long, linear, obtuse leaves of this plant are found at the 

 bottom of stagnant waters stretching upward toward the surface. 

 I have not seen it in flower, but have repeatedly collected what, 

 I have no doubt, are the leaves. In the European plant, of which 

 this appears to be a co-species, or variety, the fertile flowers float 

 on the surface, being connected with the root by spiral stalks. 

 The barren flowers grow near the bottom, but break oflT, and rise 

 to the surface before shedding their pollen. — In Fresh pond, Cam- 

 bridge. 



402. SALIX. 



Salix eriocephala. Mich. Swamp Willow. 



Diandroiis ; twigs downy ; leaves oblong-oval, 

 somewhat reliise at base, serrulate ; aments oval, ex- 

 ceedingly villous. Mich. 



A small tree, common in low, moist grounds, where its woolly 

 aments expand during the month of March, and are usually in 

 flower the first week in April. The scales of both the barren 

 and fertile aments are covered with very long, even, smooth, 

 silken hairs, which at a distance give them a woolly appearance. 

 In the barren aments each scale produces two long, yellow an- 

 thers ; in the fertile ones, which exceed the last in length, they 

 support an oblong, tapering, downy germ. Leaves oval- oblong, 

 nearly entire, green above, glaucous and somewhat downy be- 

 neath. Stipules half cordate, deciduous. 

 Salix longirostris. Mx. Sage Willow. 



Leaves narrow, wedge-lanceolate, nearly entire, 

 cineroiis-piibescent on both sides while young; germs 

 pedicelled, acuminate ; style elongated ; capsules 

 diverging, long-beaked. 

 Syn. Salix recurvata. Pursh. ? 



This is a common small shrub, growing in dry sandy woods. 

 The young branches and leaves are pubescent, giving to the 

 whole a greyish look. The leaves are small, somewhat revolute, 

 and become nearly smooth when old, under surface veiny. 



