ADDITIONAL SPECIES, ETC. 351 



416*. Sedum Forstebianum, Sm. 



Area [1 * * 4 5] G 7. 



Soutli limit in Cardigan, Radnor. 



North limit in Caernarvon ? Denbigh ? 



Estimate of provinces 3. Estimate of counties 4. 



Latitude 52 — 54. Local (Atla.) type of distribution. 



Agrarian region. Midagrarian zone. 



Descends to 100 yards, less or more. 



Ascends to 200 yainis, more or less. 



Range of mean annual temperature, say 48 — 47. 



Native. Rupestral. It is to be feared that fully half 

 of the stations on record for S. Forsterianum, by name, 

 do truly belong to S. rupestre. Those upon which I 

 found the above imperfect sketch of distribution, are as 

 follows : — Near AVater-bieak-its-neck, Radnor (Mr. T. 

 Westcombe, in Phytol. i. 781) ; at the fall of Rhydol, 

 Cardigan (Mr. E. Forster) ; Hisvae, valley of Nant Phran- 

 con, Caernarvon (Hook. Br. Flo.); on a wall, south of 

 Gwydir chai^el, near Llanroost, Denbigh (Mr. Griffith, in 

 B. G. plus a manuscript note from Mr. E. Forster, in Mr. 

 Dawson Turner's own copy, designating it " anew species, 

 different both from S. rujjestre and S. reflexum"). The 

 counties of Somerset, Northampton, Salop, Hereford, 

 Glamorgan, Montgomery, Merioneth, on various authority, 

 have also been reported for E. Forsterianum; but most 

 or all the stations in those counties should probably be 

 indicated for S. rupestre instead ; that of Northampton 

 being very likely altogether erroneous. (See vol. i. page 

 402.) 



