76 DISTRIBUTION IN CONNECTION 



R. villosa, Rubus Idaeus, Rumex crispus, R. obtusifolius, 

 Salix Andersoniana, S. fusca, (some other willows), Sene- 

 cio aquaticus, S. sylvaticus, Sinapis arvensis, Sonchus 

 oleraceus, Spergula arvensis, Spiraea Ulmaria, Stellaria 

 media, Subularia aquatica, Teucrium Scorodonia, Tri- 

 folium medium, T. pratense, Triodia decumbens, Ulex 

 europaeus (introduced), Urtica urens, Valeriana officinalis, 

 Veronica arvensis, V. Chamaedrys, V. officinalis, V. scu- 

 tellata, Vicia Cracca, V. sepium, Viola tricolor. To these 

 120, we may add all the previous 186 species, except 

 Aira alpina, Alopecurus alpinus, Alpargia Taraxaci, Are- 

 naria rubella, Astragalus alpinus, Carex atrata, C. pulla, 

 C. rariflora, C. Vahlii, Cerastium alpinum, C. latifolium, 

 Cherleria sedoides, Draba rupestris, Erigeron alpinus, 

 Gnaphalium supinum, Juncus biglumis, J. castaneus, Lu- 

 zula arcuata, Myosotis alpestris, Oxytropis campestris, 

 Phleum alpinum, Poa alpina, Salix lanata, S. reticulata, 

 Saxifraga cernua, S. rivularis, Sesleria caerulea, Sibbaldia 

 procumbens, Sonchus alpinus, Spergula saginoides, Stel- 

 laria cerastoides, Veronica alpina, and V. saxatilis, which 

 I have not seen below 2000 feet ; and it is not likely that 

 any of them will be found much below this height. De- 

 ducting 33 from 306, we have 273 species left. Probably 

 several others will hereafter be added to them, 



" Species below 1000 feet, — These it will be tedious to 

 enumerate : and they may be almost as readily shown by 

 the negative evidence. Besides the species already men- 

 tioned as not occurring below 2000 or 3000 feet, the fol- 

 lowing seem to reach their lower limits above 1000 feet, 

 Arabis petraea, Azalea procumbens, Betula nana, Carex 

 rigicla, Epilobium alpinum, Hieracium alpinum, Juncus 

 trindus (rare below 2000), J. triglumis, Luzula spicata, 

 Potentilla alpestris, Salix herbacea, Saussurea alpina, Saxi- 

 fraga nivalis, and Silene acaulis. A few others are ob- 

 served below 1000 feet in the north and west of Scotland ; 



J 



