INTRODUCTION. 21 



aizoides, Poa Parnellii, Kobresia caricina, Juncus 

 triglumis, Carex capillaris, &c. At the Higli Force, 

 where the rocks are of basalt overlaying limestone, 

 down which the river Tees pours its stream, in 

 an almost unbroken fall of sixty-nine feet in height, 

 into a dark basin, and runs along a deep ravine 

 among lofty perpendicular rocks ; other rarities en- 

 rich this most interesting botanical district. These 

 are Hieracium Lapeyrousii, rigidum, and Lawsoni, 

 Crepis succiscefolia, Potentilla fmticosa, Arbutus 

 Uva-ursi, Sesleria ccerulea, Poa Parnellii, and Carex 

 rigida. Scarcely any tract in Britain can combine 

 so many of the rarer plants as this does. Saxifraga 

 Hirculus grows on Cotherstone Fells. 

 Impatiens Noli-me-tangere, Stock Grill, and Scandale 



Beck, Westmoreland. 



Sedum album, on the syenitic rocks of the North Hill, 

 Great Malvern, Worcestershire. Dubious if really 

 wild in any other locality in Britain, and here only 

 occupying the middle range of the rocks of the 

 hill, 600 to 800ft. in height. 



Trifolium strictum, on the Serpentine of the Lizard 

 district, in Cornwall. The Rev. C. A. JOHNS, an 

 acute and observant botanist, thus mentions the 

 rare Clovers here met with. " A sloping bank on 

 the right hand of Caerthillian valley, about a hun- 

 dred yards from the sea, produces, I should think, 

 more botanical rarities than any other spot of 

 equal dimensions in Great Britain. Here are 

 crowded together in so small a space that I actually 

 covered with my hat growing specimens of all to- 

 gether, Lotus Jiispidus, Trifolium Bocconi, T. Mo- 

 linerii, and T. strictum. The first of these is far 



