100 SAUCACEAE 



b. Leaf-blades- entire. 9. 5'. myrtiLloides. 



B. Capsule pubescent, usually silky or tomentose. 

 Filaments distinct. 

 Capsules markedly pedicelled. 



Leaf-blades not densely pubescent beneath at maturity. 

 Leaf-blades linear or linear-lanceolate. 

 Filaments pubescent : capsules glabrate. 10. S. interior. 



Filaments glabrous : capsules permanently pubescent. 



II. S peliolaris. 

 Leaf-blades oblong, elliptic or ovate-lanceolate. 



Bracts reddish brown and pubescent with long hairs, cuneate or obo- 



vate. 12. S. discolor. 



Bracts yellow, linear-oblong or lanceolate. 13. S. Bebhiana. 



Leaf-blades densely white-pubescent beneath. 

 Leaves with the blades white tomentose beneath. 

 Style wanting, or, if present, less than i mm. long. 

 Leaf-blades mainly ovate-lanceolate, slender-petioled. 



13. S. Bebbiana. 

 Leaf-blades mainly oblanceolate. short-petioled. 



Mature pistillate aments 2-3 cm. long : leaf-blades 5-10 cm. long. 



14. S. hum it is. 

 Mature pistillate aments about i cm. long : leaf-blades 2-5 cm. 



long. 15. 5. trislis. 



Style over x mm. long. 16. S. Candida. 



Leaves with the blades silvery silky beneath. 17. S. sericea. 



Capsules subsessile. 18. 5". viminalis. 



Filaments united. 19. 5". purpurea. 



1. Salix nigra INIarsh. Black Wilt.ow. (Man. p. 312 ; L F. _/. 

 1173.) Along streams and lakes, N. B. to Ont., Fla. and Cal. — Penn- 

 sylvania : Delaware ; Philadelphia ; Bucks ; Chester ; North- 

 ampton ; Monroe ; Lancaster ; Dauphin ; Allegheny ; Franklin ; 

 Huntingdon ; Erie ; Clearfield. 



2. Salix lucida Muhl. Shining Willow. (Man. p. 313; I, F. 

 y. iiji).^ In swamps and along streams and lakes, Newf. to the N. W. 



Terr., N. J., Ky. and Neb. — Pennsylvania : Northampton; Lehigh; 

 Lancaster ; Chester ; Huntingdon ; Cleareield ; Crawford. 



3. Salix fragilis L- Crack or Brittle Willow. (Man. p. 313; 

 I. F. /. 1 177.) Escaped, Mass. to N. J. and Pa. Nat. of Eu. — Penn- 

 sylvania : Northampton ; Lancaster ; Dauphin ; Franklin ; Ches- 

 ter ; Monroe. 



4. Salix alba L. White Willow. (Man. p 313 ; I. F./ 1178) In 

 moist soil, N. B. and Ont. to Pa., sparingly escaped from cult. — Penn- 

 sylvania : Northampton ; Lancaster ; Franklin ; Monroe ; Hunt- 

 ingdon ; Chester. 



5. Salix Babylonica L. Weeping Willow. (Man. p. 314; I. F. 

 f. Ii7g) Sometimes spreading from cult. Native of Asia. — Pennsylvania: 



Commonly naturalized along streams, especially on farms, throughout the 

 State. 



6. Salix glaucophylla Bebb. Broad-leaved Willow. (Man. p. 

 314; I. F. y. J199.) Oa sand dunes and in sandy soil, Lake Mich., 

 northern 111., Wis. and Pa. — Pennsylvania : Monroe. 



