53. scrophulariacEjE. 223 



Agrarian region. Inferagrarian — Midagrarian zones. 



Descends to the coast level, in Thames (and Channel ?). 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 50 — 47. 



Native. Inundatal. According to the localities hitherto 

 placed on record, this little plant would seem to be very 

 thinly scattered through England, and extremely local in 

 Scotland. But its inconspicuous appearance, and the un- 

 certainty of its localities, which are so much affected by 

 differences of season in relation to humidity, no doubt 

 cause it to be frequently overlooked by botanical collec- 

 tors. Only two habitats in Scotland are known to me by 

 report ; namely, one by a pool near Guillon Links, Had- 

 dingtonshire, whence I have a specimen from Dr. G. Mac- 

 nab ; also, in Gardiner's Flora of Forfarshire, it is stated to 

 be " common," on the authority of Mr. Croall, who alone 

 appears to have seen it in that county, and who specifies 

 no locality in particular. 



789. SiBTHORPiA EDROP^A, Linn. 



Area 12***6* [8*** 12]. 



South limit in Cornwall, Devon, Sussex. 



North limit in Somerset, Glamorgan. 



Estimate of provinces 3. Estimate of counties 6. 



Latitude 50 — 52. Atlantic type of distribution. 



Agrarian region. Inferagrarian zone. 



Descends to the coast level, in the Peninsula. 



Ascends to 50 or 100 yards, in the same province. 



Range of mean annual temperature 52 — 49. 



Native. Septal, Uliginal. A local plant, not known in 

 more than the five counties above mentioned ; and that of 

 Glamorgan resting on old and unconfirmed authority, 



