CL. XXII.] 34'. SALIX CAPHKA. 441 



tempted to consider it as a peculiar species. l^iil, when 

 transplanted, it shews the transition by distinct teeth on the 

 margin of the leaves. As the tip of the leaf is often wither- 

 ed and discoloured, Smith has named it S. •sphacelata. 



2. On the young shoots, which spring from the cut root- 

 stems, the leaves are uncommonly long and broad. They 

 are sometimes seen more than six inches long, with verv long- 

 tapering points, and the stipula? very large, cordate, and 

 strongly dentated ; {Sal tomentosa, J. macrophylla, Ser. 

 p. 17.) 



3. This species grows often with small, almost lanceolate 

 leaves. In this case, the germen also is usually drawn out to 

 a greater length. This is S. acuminata, Mill., Hofm., 

 Smith., Willd. But this variety has many evident transitions 

 into tlie usual form of S. caprea. 



4. AVith completely round, and even with cordate leaves, 

 which scarcely taper at the point. This is S. tovicntosa, H., 

 rotimclifolia, Ser v. p. 17. 



5. With oblong leaves, the lower surface of which is grey- 

 ish, and furnished with a few hairs, (S. aquatica. Smith). 

 The moist situation seems to produce this variety. 



6. With androgynous catkins, (S. Tinimii, Schk. 3. s. 457. 

 S. tomentosa D., androgyna Ser, p. 16.), Vorgl. s. 322. 

 Numerous malformations also are produced by the puncture 

 of insects, and by parasitical plants. 



Diagnosis and Affinity. 



This species is most nearly related to S. aurita L., {S. 

 rugosa Ser.), and as both of them are alike various in their 

 aspects, they approach each other in their forms. But *V. au- 

 rita is principally distinguished by its wrinkled leaves, which 

 taper at the base, and have their tips drawn oblicpiely {nui- 

 cronc adunco), by its great cordate stipulae, by its hairy fila- 

 ments, united at their lower part, by its long tapering ger- 

 men, and by its low growth, seldom exceeding six feet, com- 

 monly only from two to four feet in height. To S. aurita L., 

 belong, as varieties, S. ambigita Ehrh., spathulata W., and 

 uli^ino^a W. 



