1744 The Trees of Great Britain and Ireland 



I. Leaves ovate or oval. 



i. Salix Caprea, Linnaeus. Seep. 1745. 



Leaves oval, elliptic or ovate, 2 to 3 in. long, 1 \ in. broad, irregularly crenate ; 

 lower surface bluish grey, tomentose. 



2. Salix pentandra, Linnaeus. See p. 1747. 



Leaves fragrant when bruised, ovate to ovate-lanceolate, about 3 in. long and 

 i in. broad, abruptly acuminate, minutely serrate, glabrous on both surfaces. 



II. Leaves lanceolate. 



A. Mature leaves not ciliate in margin, green above, green or glaucous beneath. 

 * Leaves broadly lanceolate, with coarse serrations, which are not close together. 



3. Salix speciosa, Host. Seep. 1756. 



Leaves, broader than in S. fragilis, 4 to 6 in. long, \\ to ij in. broad, glabrous 

 except for a few scattered hairs on the slightly glaucous under surface. 

 Young branchlets pubescent or glabrescent. 



4. Salix fragilis, Linnaeus. See p. 1754. 



Leaves about 4 in. long, f to 1 in. broad, glabrous except for a few scattered 

 hairs on the glaucous under surface. Young branchlets pubescent. 



** Leaves narrowly lanceolate, with fine close serrations. 



(a) Young branchlets crimson, glabrous ; clay-coloured in the second year. 



5. Salix decipiens, Hoffmann. Seep. 1755. 



Leaves, 2 to 3 in. long, \ to f in. broad, similar to those of S. fragilis, but 

 smaller and green beneath. 



(b) Young branchlets green, becoming a brilliant yellow in winter and the following 



year. 



6. Salix vitellina, Linnaeus. See p. 1 768. 



Leaves, 2 to z\ in. long, $ to \ in. broad, green above, glaucous beneath ; with 

 scattered appressed hairs, sparse above, more abundant beneath. See No. 11 a. 



(c) Young branchlets green, becoming olive green or brownish grey in the second year. 



7. Salix babylonica, Linnaeus. See p. 1 749. 



Leaves, 2^ to 4 in. long, \ to f in. wide, tapering to a long slender filamentous 

 apex; when mature, glabrous and glaucous beneath. Branchlets pendulous, 

 always injured in England by spring frost. 



8. Salix elegantissima, Koch. Seep. 175 1. 



Leaves similar to those of S. babylonica, but broader, and more coriaceous, 

 and less glaucous on the lower surface. Branchlets pendulous, uninjured in 

 England by spring frost. 



9. Salix Salamonii, Carriere. See p. 1 750. 



Leaves similar to those of S. babylonica, but with scattered appressed long 

 hairs on both surfaces. Branches ascending, with pendulous branchlets, which 

 are not injured by frost in England. 



