Saliv.^ DIOECIA — DIANDRIA. 359 



high, and above 1 1 feet in its greatest circumference. Great as is the 

 affinity, botanically speaking, between this plant and the preceding, its 

 properties are wholly different. So important is it as a plantation tree, 

 that Mr Lowe, in his Survey of the County of Notts, states that at 8 

 years growth, the poles yielded a net profit of 214/. per acre; and in 2 

 years longer, they would probably have produced 300/. per acre. The 

 late George Biggin, Esq. of Cosgrove Priory, an able chemist, ascer- 

 tained that the bat'k of this tree contains the tanning principle in a su- 

 perior degree to that of the Oak: and it is supposed that the medical 

 properties said to belong to S. fragilis, are attributed to it by mistake, 

 and should be refered to the present. The leaves are of a peculiarly 

 handsome shape when in perfection, deeply serrated and much attenuated. 



***** Albse. Borr. Trees of considerable elevotw?i, having lan- 

 ceolate serrated leaves, with long silky hairs beneath, especially 

 in a young state, ichich give to the foliage a light or ivhitish hue: 

 the sei-ratures glandular. Catkins lax : germens glabrous. 



15. S. alba, L. (common white Willoio) ; leaves elliptical-lan- 

 ceolate regularly glandiiloso-serrate acute silky beneath often 

 so above, germens ovato-acuminate nearly sessile glabrous, 

 stigmas nearly sessile short recurved bifid, scales short pubes- 

 cent at the margin. E. Bot. t. 2430. Salict. Wob. p. 271, t. 136. 

 — (3. under-side of the leaves less silky, often quite glabrous. 

 S. ccBridea, {blue Willow). E. Bot. f. 2431. Salict. Wob. p. 

 273, t. 137. 



River-sides, moist woods, &c. Fl. May. T^ . — A well known tree, of 

 considerable size, and of which the var. ^. is of such exceedingly rapid 

 growth, that it is by many still deemed a distinct species ; and Mr 

 Forbes observes that the new leaves, after the wood has been cut, are 

 of a larger size, and, as well as the twigs, of a darker hue than the real 

 S. alba. They seem to be alike valuable for their bark and their tim- 

 ber, and are both amply deserving of cultivation. 



16. S. vitellina, L. (yellow Willow or golden Osier') ; leaves 

 lanceolate with glandular serratures acuminate more or less 

 silky beneath often so above, germens lanceolate sessile gla- 

 brous, style short, stigmas bipartite, scales lanceolate. E. Bot. t. 

 2430. E. Fl. V. W.p. 182. Salict. Wob. p. 39, t. 20. 



Hedges and osier-grounds, in many places. Fl. May. T2 . — This is 

 rendered striking by the bright yellow colour of its branches, and the 

 leaves often partake of the same tint. With this exception, the plant, 

 as Mr Borrer observes, is " extremely nearly allied to S. alba." Hal- 

 ler, too, unites them. It is used as an Osier in many places. 



* 6. Grisese. Borr. 



17. S. petioldris, Sm. (dark long-leaved Willow) ; leaves lan- 

 ceolate serrated when young grey with short silky hairs espe- 

 cially beneath, germens stalked ovato-lanceolate very silky, 

 stigmas divided nearly sessile, scales villous scarcely longer 

 than the pedicel. E. Bot. t. 1147. Salict. Wob. p. 45, t. 23. 



Scotland. Angus-shire, Fl. Apr. T2 . — A very distinct species, 

 with dark branches, and dusky-coloured, greyish-green leaves, silky 



