200 MR. J. G. baker's MONOGBAPn OF BRTTTSH ROSES. 



Grroup 1. Spinosissimje, Low erect compact bushes, with 

 crowded and very unequal prickles, the large ones slender and 

 nearly or quite straight. Leaves naked or hairy, never more 

 than slightly glandular beneath. Sepals persistent or subper- 

 sistent. 



Fruit dark purple. Flowers always solitary. 1. spinosissima. 

 Fruit bright red. Flowers not essentially solitary. 



Sepals truly persistent, always simple, thinly glandular cm the 

 back. Leaves quite naked, with simple teeth. 



Sepals truly persistent, more or less compound, densely glan- 

 dular on the back. Leaves more or less, often very hairy, 

 the teeth generally compound 3. invohda. 



Sepals compound, naked on the back, not fully persistent. 

 Leaves naked or thinly pubescent beneath, simply toothed. 



4. ]iiher7iica. 



G-roup 2. ViLLOS^. Larger bushes, erect or lengthened out 

 and arching. Prickles uniform, scattered, slender, scarcely at all 

 hooked. Sepals persistent or subpersistent, always densely glan- 

 dular on the back. Leaves generally very hairy and inconspicu- 

 ously or not at all glandular beneath. 



Sepals truly persistent. Fruit ripening early, with no disk. 



Bush arching ; sepals copiously compound 5. pomifera. 



Bush erect; sepals sparingly compound ... 6. moUissima. 

 Sepals not truly persistent ; fruit later in ripening, with a dis- 

 tinct disk like that of canina 7. tomentosa. 



Group 3. EuBiOTNOs.^. Smaller bushes than in the last and 

 next group, erect or arching ; the prickles scattered, stouter 

 downwards, and decidedly hooked, sometimes with a few aciculi 

 mixed amongst them. Leaves thinly hairy or not at all hairy, 

 but always densely glandular over the under surface. Sepals sub- 

 persistent. 



Very odorous ; bush erect and compact 8. rubiginosa. 



Arching bushes without decided Sweet-briar fragrance. 



Prickles uniform ; flowers and leaves small ; styles naked ; 

 peduncle generally aciculate 9. micrantJia, 



* This and pomifera, though introduced in the Clavis, have, as will be seen, no 

 fair claim to be regarded as British plants. 



h ■ ^. -^ >. 



