206 86. GRAMINA. 



nerves in the pales or glumes of grasses, I suspect to be a 

 fallacious character. And a little more or less web, its 

 presence or absence, is worthless as a character for dis- 

 tinction. P. polynoda has been recorded from Somerset, 

 Sussex, Hertford, Gloucester, Westmoreland, and Edin- 

 bui'gh. 



1334, PoA NEMOEALis, Linn. 

 1334, c. PoA Paknellu, Bab. 

 1334, d. Poa MONTANA, " Pum." 



Area 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16. 



South limit in Devon, Dorset, Sussex, Kent. 



North limit in Moray, Aberdeen, Dumbarton. 



Estimate of provinces 16. Estimate of counties 70. 



Latitude 50 — 58. British type of distribution. 



A. A. regions. Inferagrarian — Midarctic zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 1000 yards, more or less, in E. Highlands. 



Range of mean annual temperature 51 — 37. 



Native. Sylvestral, Rupestral. The upper limit of 

 this species (or as some may have it, aggregate of species) 

 must be considered very unsatisfactorily determined. Ac- 

 cording to Dr. Greville (Mab. Man. edit. 2) P. montana 

 occurs at 3600 feet on Ben Lawers ; but statements of 

 this kind, made by individuals not accustomed to measure 

 and estimate altitudes, can seldom be received with im- 

 plicit reliance, and are usually intended only as general 

 approximations. It may be observed here, that I take 

 the botanical doings of Dr. Parnell only as they have been 

 adopted by other and better authorities, and never at the 

 first-hand. For this unusual course a reason could be 

 adduced which I am imwilling to print, although not 



