85. CYPERACE^. 97 



low. If SO, the correction must be left to future observ- 

 ers, or to futui'e opportunities. 



'^/^'-^Xf, 1212, b. Carex PERSooNn, Schreb. 



Area -^ ^^ =;^ ^ ^ ^ / =^ ^^^ 10 11 ^ ^ ^ lo ^ 17. 



South limit in Merioneth, Caernarvon, York, Dm'ham. 



North limit in Eoss, Aberdeen, Perth, Forfar. 



Estimate of provinces 7. Estimate of counties 15. 



Latitude 52 — 58. Highland type of distribution. 



A. A. regions. Su^jeragrarian — Midarctic zones. 



Descends to 350 yards, in Humber (J. G. Baker). 



Ascends to 1000 yards, in East Highlands. 



Range of mean annual temperature 42 — 36. 



Native. Uliginal, Paludal. The stations are very im- 

 perfectly recorded at present, on account of the combina- 

 tion of this alleged species with ordinary C. curta of the 

 lower zones. All the counties certainly known to me for 

 C. Persoonii, are mentioned above in indicating the south- 

 ern and northern limits. I think, however, that I must 

 have seen it in the West Highlands, and in other counties 

 than those above mentioned, in the North and East High- 

 lands. Mr. F. J. A. Hort names for C. Persoonii the 

 counties of Merioneth, Caernarvon, and Durham. Mr. J. 

 G. Baker records that of York. For Perth, Forfar, Aber- 

 deen, there are various authorities, and I have myself 

 seen the plant in those counties. Mr. C. C. Babington 

 informs me that it grows on Ben Wevis, in Ross-shire. 



VOL. in. 



