NOETHUMBEELAND AND DtTRHAM. 77 



of birch. To reach Henhole, which is perhaps the finest, or at 

 any rate the rockiest glen of the three, from Dunsdale, the ridge 

 on the west has to be crossed, as the glen sweeps round the west 

 end of the highest ridge so as almost to join the Langlee glen at 

 its head. Of the well-heads of the upper part of these ravines, 

 from 1500 to 1800 feet, the following are the principal plants : — 



Caltha palustris. 

 Sediim villosuin. 

 Sasifraga steUaris. 

 Epilobium obscurum. 



alsinifolium. 

 Myosotis repens. 

 Montia fontana. 

 Stellaria uliginosa. 

 Parnassia palustris. 



Lychnis flos-cnculi. 

 Taraxacum palustre. 

 Carcliuis pahistris. 

 Galium palustre. 

 Juncus effusus. 



lamprocarpui?. 

 Carex pulicaris. 



panicea. 



"sailffaris. 



Amongst the debris there is abundance of Allosorus crispus, 

 but the only other rare fern, Asplenkm viride, is more difficult 

 to find. The more note-worthy montane plants of the crags 

 are — Sedum rlwdiola, Hieracium argenteum and pallidum, Rulus 

 saxatUis, Poa Balfourii, Saxifraga Tiypnoides, and Epilolkmi an- 

 gustifolium. The streams of these ravines join at Southernknow, 

 3 miles below which is the finest of the low-level Cheviot water- 

 falls, Heathpool Linn. On the south is a dry bell-shaped hill, 

 1700 feet in altitude, and on the north a porphyritic crag sweeps 

 down suddenly into the stream, contracting it for a space of 30 

 or 40 yards into a narrow rocky channel. The rocky banks 

 are overgrown by bright-green shade-loving mosses, and over- 

 shadowed by ash and elm ; and a natural wood of oak, rowan, 

 and birch extends along the slope of the southern hill. Here 

 grow Dianthus deltoides, Euonymus europceus, Poa nemoralis, 

 Epilolium angustifolium, JHeracium argenteum and crocatum. 

 At Kirk-JSTewton the Glen is joined by the Beaumont, which 

 rises on the Scotch side of the Cheviot mass, and sweeps round 

 it in a curve past Yetholm and Mindrum. The Kilham Hills, 

 which are enclosed in the angle between the two streams, are a 

 series of rounded tors not exceeding 1000 feet in height, dry. 



