NOTES ON SCOTTISH ROSES 171 



stand as yet either R. sub-canina or R. sub-collina in a satis- 

 factory manner. The best time for studying them seems to 

 be in the first two weeks of September, and during that 

 period of this season I had but little time to spare for 

 roses. 



R. GLAUCA, Vill. 



I. Teeth simple, pedicels smooth, sepals without glands 



on the back. 



n, from Mid Perth. 



"It is to this sub-division that the type of R. glauca 

 belongs." 



II. Teeth simple, pedicels hispid-glandular, sepals 

 glandular on the back. 



5, from Mid Perth, West Perth, Arran, and Selkirk. 



" In No. 43 the pedicels are smooth and there are some 

 double teeth mixed with simple teeth. No. 93, which you 

 name R. andegavensis (Bast.), is a var. of R. glauca belonging 

 to this sub-division. No. 152, from the Isle of Arran, which 

 you name R. tomentosa, appears to me to be a var. of R. 

 glauca. The leaflets are perfectly glabrous, the teeth are 

 irregular. In general appearance it resembles No. i 5 3 from 

 the same locality, which you refer to R. tomentosa. 



, i 



III. Teeth double or composite, pedicels and sepals 



without glands. 



30, from East Perth, Mid Perth, West Perth, 

 Stirling, Fife, and Selkirk. 



' In No. 5 i certain parts of the axes are ' heteracanth.' 

 This is probably accidental. In Nos. 41 and 42 the teeth 

 of the upper leaves are simple." 



IV. Teeth double or composite, pedicels smooth, 

 sepals glandular on the back. 



5, from East Perth, Mid Perth, Cheviotland, and Stirling. 



1 See note on 153, under R. tomentosa, on page 120. 



