DKECIA. DIAND. TRIAND. 287 



41. S. mollhsima {silky-leaved IVillow), leaves lanceolate ob- 

 scurely crenate white and covered with silky pubescence be- 

 neath,' stipules rather small semicordate acute, germens lan- 

 ceolato-subuhite very silky shortly pedicellate, style elongated, 

 stigmas long linear mostly entire. E. B. t. 1.509. 



Hab. Banks of the Esk above Musselburgh, rare, Maugh. Hedges 

 and osier-grounds in Scotland, frequent, D. Don. Fl. April. V^ • 

 This is considered a useless Osier. 



42. S. viminnlis {common Osier), leaves linear lanceolate ob- 

 scurely crenate white and silky beneath, stipules very small 

 sublanceolate, branches straight and twiggy, germens upon 

 very short footstalks silky lanceolato-subulate, style elongated, 

 stigmas long linear mostly entire. Ligktf. p. 60S. E. B. 

 t. 1898. 



Hab. Marshes, frequent. Fl. April, May. Tj . 



Whatever may be the differences in the economical value between 

 this and the two preceding species, it must, nevertheless, be ac- 

 knowledged that their specific distinctions rest upon very slight 

 grounds. The present is considered among the most useful of 

 the genus, in consequence of its long pliant twigs, for basket- 

 makers. — In all, the germen and long stigmas agree ; and by these 

 they may be known from all other species. 



43. S. alba {common while Willow), leaves elliptical-lanceo- 

 late regularly glanduloso-serrate acute silky beneath often so 

 above, germens ovato-acuminate nearly sessile glabrous, stig- 

 mas nearly sessile short recurved bifid, scales short pubescent 

 at the margin. Lightf. p. 610. E. B. t. 2430, and t. 2431 

 (>S. ccerulea). 



Hab. River sides, woods and moist meadows. Fl. May. Ij • 

 A well-known tree of exceedingly rapid growth, and of late much 

 cultivated about Glasg., where it is known by the name of the 

 Huntingdon Willow. It is very distinct, and I regret that another 

 species should have been made resting upon such slight grounds as 

 the lesser degree of silkiness on the leaves ; as in the iS. ccerulea, Sm. 

 The learned author of the E. U., however, tells us he ventured to make 

 it so,that it might be the more noticed. The growth of this var. (if 

 even such it may be called) is extraordinary. Dr. Rigby, of Norwich 

 having planted a cutting, which in ten years became a tree of 30 

 feet in heiglit, and .5 feet 2 inches in girth. The wood and bark of 

 both kinds are valuable; the former for making into poles, stakes, 

 hoops, and even butter-firkins and milk-pails ; the latter not only 

 for tanning, but as a substitute for Peruvian bark. 



2. TRIANDRIA. 



2. EMPETRUM. 

 1. E. nigrum (black Crow or Crake-Berry), procumbent, 



leaves linear-oblong. Lightf .p. 612. E. B. t. 526. 

 Hab. Mountainous heaths, frequent. Fl. May. fj . 



