176 24. R. HYSTRIX. 



The R. Hystrix found at Killainey approaches nearly to it 

 in both of these respects, M. Questier considers his plant 

 as perhaps the same as R. rudis e denticulatus (Bab.), which 

 I now believe to be a variety of R. Radula. I cannot agree 

 with him in this identification. R. infestus (Billot, 1. c. 

 No. 2453) closely resembles R. approximatus at first sight; 

 but it has none of the characters of the RadulcE. I place it 

 with R. villicaulis. Indeed it closely approaches the R. 

 pcmipinosus (Lees). 



Habitat.— HedigQ^ and thickets. July, August. 



Area.—\ 2 3 4 5 .. 8 . 10 11 19. 



Localities. — i. Oakhampton, N. Dev.; Tamerton Foliott, 

 S. Dev. (Briggs!); Swan Pool, Falmouth, W. Corn. — ii. 

 Quarr Wood and St John's, Isle of Wight. — iii. Leith Hill 

 and Hook, >SW7\; Little Berkhampstead, ZTer^s; Woodman- 

 cote, W. Suss.; Harrow, Middl. (Hind!). — iv. Cromer, E. 

 J^orf. — V. Coleford and Stapleton near Bristol, W. Glouc; 

 Wentwood, 2Ionm. ; Penyard Park wood and Lyston, 

 Here/. ; Atherstone, Warw. ; Redwood near Cheltenham, E. 

 Glouc. (Notcutt!). — viii. Little Orton and Twycross, Leic. 

 — X. Thirsk, N. E. York. (Baker!); Aisenby, K W. York— 

 xi. Ancroft, Chev. (Johnst. !). 



xix. Killarney, *S'. Kerry. 



