32. K. DIVEESIFOLIUS. 225 



Mr Syme {E. B. iii. 184) would seem to refer the whole 

 of my li. liadula y denticulatus doubtfully to the R. apicu- 

 latus. In this I consider him to be wrong. The true var. 

 denticulatus seems to me to be certainly a form of ^. Radula, 

 although not a very common one. He is I believe correct 

 in saying that Mr Bloxam's R. apiculatus (MS.) can hardly 

 be joined to R. Radula, and correctly quotes my opinion 

 that it (not the true v. denticulatus) is nearly allied to R. 

 diversifulius. It does not appear clearly from Mr Syme's 

 words that he has ever seen the plant from Waith, and I 

 have not seen that gathered by Mr Bloxam near Sheffield 

 Mr Newbould's plant from near Sheffield is the true v. den- 

 ticulatus of R, Radula; and if the specimen given to Mr 

 Syme by that botanist has the armature of the Koehlerianiy 

 it is not the same plant as I received from him in the year 

 184G. 



The specimen named R.fusco-ater by Dr Bell Salter for 

 Leigh ton differs from that for which I am indebted to Dr 

 Salter himself The former is R. diversifolius ; the latter 

 may be a more than usually prickly state of R. Balfourianus. 



The special characteristics of this species seem to be the 

 very prickly stem with longitudinally flattened prickles, 

 imbricate lower leaflets, and a panicle having a slightly 

 wavy but very strong rachis and an abundance of short 

 nearly equal axillary branches which always fall short of the 

 leaves. 



Habitat. — Hedges. Exceedingly abundant in some places, 

 especially in the valley of the Severn in Montgomeryshire 

 and Shropshire. July and August. 



Area.— I 2 3 4 5 6 7 . 9 10. 



Localities. — i. St Mary's, Scilly, W. Corn. (Townsend!); 

 Near Plymouth, S. Dev. (Briggs). — ii. Cockleton Bog, Isle of 

 Wifjht (Salter!); Poole, Dors. (Salter!); Selborne, Hants 

 (Salter) ; Henfield, W. Suss. — iii. Watford, Herts; Clapham, 



