122 
ENGLISH BOTANY. 
On rocky debris and ledges of rock on mountains. Not uncommon. 
Snowdon, Carnarvon ( ?); Ingleborough, Yorkshire ( ?); the Cheviots, 
Northumberland (!); Clova Mountain, Forfarshire; Ben Yoirlich and 
the Breadalbane Mountains, Perthshire. " Loch-na-gar, Mr. R. 
^lackay, also on rocks north base of the Moume at Castleton " Brae- 
mar. (Dickie's Botanist's Guide.) 
England, Scotland. Perennial. Late Summer. 
Stems 6 to 8 inches high. Leaves 1 to 3 inches long by to i 
inch broad. Panicle 1 to 5 inches long. Spikelets i to ^ inch long. 
Florets i inch long. 
Very closely allied to P. eu-glauca, from which it is often impossible 
to distinguish it in herbarium specimens: but the two forms are 
readily separable when growing. P. Balfourii grows in tufts and has 
the flowering stem and panicle -branches weak, not rigid as in P. eu- 
glauca ; the ligule is longer and the whole plant is less glaucous, and 
without the bluish or csesious tinge of P. eu-glauca. The panicle is 
longer and narrower, much more closed in fruit, except in small 
stunted specimens in which the branches are often spreading even 
after flowering. In luxuriant specimens also the panicle becomes 
nearly equal, and often droops over to one side. 
I follow Professor Babington in placing P. montana Pamell as a 
variety of P. Balfourii. If I am right in referring a plant which I 
collected in Canlochen Glen to P. montana, I have little doubt that 
he is correct, as it has the elongate ligule of P. Balfourii and not the 
scarcely apparent one of P. nemoralis. But the greater proportion of 
specimens which I have seen labelled P. montana Pamell are alpine 
forms of P. nemorahs, although Dr. ParneU himself, in his descrip- 
tion, distinguishes his P. montana from P. nemoralis by the ho-ules 
of the former being very conspicuous. The presence or absence of 
arachnoid hairs at the base of the florets is a character which varies 
60 gTcatly in the same species that no reliance whatever can be 
placed on it, though these hairs are in some species of Poa more often 
developed than in others. 
I do not venture to quote continental synonyms under the sub- 
species of Poa glauca, on account of not having access to authentic 
specimens. 
Balfour's Meadow- Grass. 
SPECIES VI.-P OA NEMORALIS. Linn. 
Plates MDCCLXVIH. SfDCCLXIX. 
BmcL Ic. FI. Germ, et Heir. Vol. I. Tab. CLIX. Pigs. 403 to 4<}8. 
Billot, Fl. Gan. et Germ. Exsiec. No. 1786. 
Caespitase. Rootstock slender, very shortly creeping, with several or 
