186 80. GRAMINA. 



Ascends to 700 or 800 yards, in East Highlands. 



Range of mean annual temperatui'e 51 — 39. 



Native. Pascual, Rupestral. Not a very common gi-ass, 

 although widely distributed, and far from rare. In ex- 

 treme cases the mountain form, called A. alpina, does look 

 different frora the plant of the dry and warm pasture 

 grounds of the south of England ; but the two are con- 

 nected by so many intermediate and gradual links, equally 

 as by the want of good distinctive characters, that they 

 are now re-united by almost general consent. 



AvENA PLANicuLSUS, Schracl. 



Area [15 16]. 



Incognit. The name of this species was applied to a 

 plant which was cultivated in the Botanic Garden at Glas- 

 gow, and which Mr. Stuart Murray believed that he had 

 originally brought from " Glen Sannox, on the ascent of 

 Goat-fell, from Loch Eannoch, in the isle of Arran ". The 

 species has been since unsuccessfully searched for in the 

 locality indicated, and particularly by Dr. BaKour in the 

 summer of 1843. So large and conspicuous a plant was 

 not likely to be overlooked when sought for ; and we are 

 thus led to suppose some mistake made about the origin 

 of the root in the Glasgow garden. Mr. Babington 

 (Manual) meets the difficulty of the case by sinking A. 

 planiculmis into a variety of A. pratensis ; a course from 

 which I infer that he has not seen the real A. planiculmis 

 of the gardens ; sufficiently well represented, however, in 

 the Supplement to English Botany, to which he refers. 

 Unfortunately, Dr. Balfour has omitted to mention whe- 

 ther he found A. pratensis or A. pubescens in Glen San- 

 nox ; as the certainty of either of those species growing 



