ii8 ANNALS OF SCOTTISH NATURAL HISTORY 



the Continent or from other localities in the British Isles. 

 Its leaflets are profusely glandular below, and have many 

 glands also on the upper surface ; but what is extraordinary 

 is that there are numerous long, stiff bristles clothing the 

 pedicels and receptacles. At first sight one would imagine 

 it to be the hybrid R. piinpincllifolia x rubiginosa (R. echino- 

 carpa, Rip.) ; but this idea cannot be entertained when we 

 look at the prickles, which are straight or but slightly 

 curved. Moreover, R. rubiginosa is not found in the 

 immediate neighbourhood. On the other hand, there is 

 found growing beside the hybrid a form of R. tomentosa with 

 leaflets glandular on both surfaces, and with pedicels and 

 sepals thickly hispid-glandular. Let us not forget to add 

 that the axes of this hybrid have quite the armature of the 

 ordinary varieties of R. Sabini, Woods, that its receptacles 

 have ripened, quite full of achenes, and that its sepals are 

 persistent." 



Another of the Perthshire bushes of R. Sabini was but 

 poorly represented in the gathering of 1894, because when 

 I visited it a heavy thunderstorm came on, and it was " cut 

 and run." This year I sent numerous specimens of it in 

 fruit, and gave the following reasons for thinking that it is 

 the hybrid of R. pimpinellifolia x mollis, not R. pimpinelli- 

 folia x toinentosa : 



1. It grows between two clumps of R. pimpinellifolia 

 and R. mollis, so close that the branches interlace. 



2. Its prickles are straighter and more slender than in 

 our other forms of R. Sabini. 



3. Its sepals are much less appendiculate. 



4. The pedicels are shorter than in the other forms, and 

 the fruits are mostly solitary. 



In reply to these reasons Professor Crepin, in his third 

 report, says : " The reasons you mention are in favour of 

 the idea that it is R. pinipinellifolia x niollis. It may be 

 added that the stipules and their points are more dilated. 

 Try to gather this No. with flowers." 



On at least one other of our Perthshire forms I should 

 like to reserve my opinion as to whether the second parent 

 is tonientosa or not. 



