86 



The following reach their southern limit in the British Isles in Carnarvon- 

 shire. 17 Speciks : — Thalictrum alpinum, Arabis petrsea ? Polygala vulgaris 

 var. grandiflnra, Silene acaulis, Cerastium alpinum, Cerastium latifolium, Saxi- 

 fraga nivalis, Saxifraga caespitosa, Saxifraga decipiens, Saussurea alpina, Luzula 

 spicata, Carex atrata, Poa alpina, Poa glauca, Woodsia hyperborea, Woodsia 

 ilvensis, Aspidium Lonchitis. 



The following reach their southern limit in Central Wales. Species : — 

 Cochlearia alpina, PotentiUa aljjestris? Saxifraga stellaris, Crepis paludosa, 

 Oxyria reniformis, Carex rigida. 



The following reach their southern limit in Breconshire. 13 Species : — 

 Thalictrum montanum, Silene maritima, Cerastium ali^estre, Sedum lihodiola, 

 Saxifraga opj)ositifolia, Saxifraga sponhemica? Galium boreale, Solidago Cam- 

 brica, Salix herbacea, Aira CEespitosa, variety? Aira montana? Poa montana? 

 Asplenium viride? 



The following reach the Black Mountain Group. 9 Species : — Meconopsis 

 Cambrica, Alchemilla vulgaris var., Saxifraga sponhemica, Saxifraga hypnoides, 

 Solidago Cambrica, Aira csesijitosa, var., Poa montana, Hymenophyllum unila- 

 terale, Asplenium viride. Of these nine species all except one are included in the 

 " Herefordshire Flora." 



One Species is peculiar (?) to the Black Mountain, Pyrus rupicola. 



