









REVISION OF THE BRITISH WILLOWS. 



419 









would imply. Koch says that the catkins, buds, and twigs of 

 holosericea be&T so great a resemblance to those of cinerea, that it. 

 is impossible to separate the two plants except by the leaves. 



Some of the plants named Salix rugosa, Leef e, seem to properly 

 belong to velutina. Leefe's own specimens (Sal. Brit. Exs. 

 No. 30, and Sal. Exs. i. No. 22)— of which he writes, " I find it 

 difficult to say whether this plant is nearer to S. holosericea, W., 

 or S. Smithiana, W. ; with much hesitation I have thought it on 



























the whole to belong to the latter" — are very like Wimmer's 

 example (Coll. Sal. No. 100) of holosericea, Willd., except that 

 Wimmer's is more pubescent. (Andersson remarked of the 

 Sal. Brit. JExs. No. 30 specimens that they seemed to him to be 

 S. acuminata, Sm. ; but Leefe justly says that they do not at all 

 resemble S. acuminata, Sm. Eng. JBot., and "Ward declares them to 

 be true " holosericea, Hook.") Between Dr. Fraser's holosericea 

 and the plants from Pendeford Mill, named by him rugosa, I see 

 no essential difference in the leaves. The latter are $ plants, and 

 from the tomentose twigs &c. seem to be velutina. So also is a 

 " rugosa " from Clevedon (J. W. White) ; but other plants, from 

 various sources, named rugosa pass by degrees into sericant 

 »• tubobscura. 













ferruginea {Salix ft 





Thi 







w 







^ which Andersson makes a variety of his y. velutina, 

 resembles an intermixture of S. aurita and S. viminalis, though 

 whether it is really a hybrid of these species requires proof. 

 Wimroer quotes English specimens (from Pinley, T. Kirk), named 



exam 





referable 

 delude 



same locality and collector seem probably 



eady 







& m part S. cinerea-viminalis, W 



Jerruqinea is nornmll v a, smnl W n 











■ 











■ 













--.,-.. «y „« c « is normally a smaller plant in every respect than 



a °y of the foregoing varieties, and has more slender and more 



gkbrous twiga, smaller leaves, usually broader above the middle 



J nd almos t destitute of pubescence, and smaller catkins. An- 



erason points out that ferruginea maybe the same as S.obscura, 



oll » a plant very difficult to distinguish from the smaller states 



'° * : ° ion subobscura of sericans, from which statement 



of the modificat 



It mo w V- _ ., 





/< 



aud sericans. 

 ferruqinea. < 



rugosa 



. 













fc 



