254 Rowlee : North American Willows 



Allegheny Mts. Specimens representing the species have been 

 seen as follows : 



Missouri : St. Louis (H. von Schrenk). 



Illinois : Rockford and Fountaindale (M. S. Bebb). 



Minnesota : Redstone (H. Mann). 



Michigan : Flint (D. Clarke). 



Ohio : Painesville (H. C. Beardslee, nos. 48 and 73). 





Dudley). 



W. Clinton) ; Cayuga Lake (W. R. 



Pennsylvania : Easton (A. P. Garber), McCalls Ferry (T. C. 

 Porter). 



The variety Wheeler i is confined to the basin of the Great 

 Lakes. Specimens have been seen from : 



Illinois: Fountaindale (M. S. Bebb, nos. 118 and 119). 



Michigan : Flint (D. Clarke), Black Lake, Choboygan Co. (C. 

 F. Wheeler, no. 3). 



Ohio : Painesville (H. C. Beardslee, no. 67). 



Ontario : Point Abino (W. W. Rowlee). 



Pennsylvania : Presque Isle, Lake Erie (T. C. Porter). 



New Brunswick : Frederickton (J. Britten, nos. 4 and 6). 

 The silvery vesture of this shrub is much like that of 5. drgo- 

 phylla of the Pacific Coast. 



Narrow-leaved individuals occur in the extreme western and 

 southwestern range of the species, and seem to connect this species 

 with the preceding : 



Missouri : Courtney (B. F. Bush, no. 9). 



Nebraska: Emerson (Clements, no. 2509). The vesture of 

 the capsule, and the glands in the staminate flower afford a decisive 

 distinction between them. 



9. Salix fluviatilis Nutt. North Am. Sylva, 1 : 73. 1842 

 Salix longifolia pedicellata Anderss. Sven. Vet. Akad. Handl. 



IV. 6:/ 35. 1867. 



Distinguished from the next species to which it is closely re- 

 lated by its pedicelled capsules and by its remotely denticulate 

 leaves. It has the same general range as S. exigua but seems to 

 be much less frequent. 



