Zi2 THE LIFE AND WORK OF GEORGE DON. 
Parmelia vitellina Parmelia crispa 
me norum # ascicularis 
a brunnea ie furfuracea 
= candelaria »,  Jubata, var. 4. 
” gelida ] alybeif mis 
+ circinata Sticta limbata 
epigea 
: semata Peltides apk eS 
- ceesia »  resupinata 
ne recurva jo. eroces 
it fahlunensis saccata 
= conspersa Cetraria nivalis 
© heematomma 
2 pulverulenta Cornicularia saitedta 
y stygia ¥ tristis 
s affinis i: spadicea 
5 plumbea a anata 
s caperata pubescens 
. herbacea Ster eocaulon paschale 
‘ glomulifera Bzeomyces roseus 
# scrobiculata = rupestris 
=" pulmonacea " Papillaria 
ey saturnina ‘: bellidiflorus 
” ra ca cenoteu 
- nigrescens - spinosus 
The plants, natives of the Clova mountains, which have the chief 
claim to the farmer’s notice, are the Gramina. Of the rarer grasses, 
the first is the Alopecurus alpinus, a new species which I 
discovered many years ago. This grass I have cultivated for 
several seasons, and I am convinced it is but little inferior to the 
A. pratensis, so much taken notice of by agricultural writers. It 
has the advantage of the latter, in so far as it increases more freely 
in the roots, and readily produces perfect seeds, the want of which 
is sometimes complained of in the A. pratensis. The next is 
Phleum alpinum, which forms a considerable part of the pasture on 
the mountains of some of the northernmost parts of Europe, and 
seems a grass well calculated for pasture in alpine districts. Poa 
nemoralis, Poa glauca, and Poa alpina, and the variety vivipara, 
are all good grasses; the P. alpina is one of our best pasture 
grasses on poor soil, with a bad climate. Lately I discovered three 
other grasses, new to Britain, viz. the Avena plano-culmis of 
Schreeder, Fl. Germanica, producing a great quantity of foliage; 
the Aira ievipete and the Phleum Meichelii, the Phalaris alpina 
of the German authors: these grasses grow on the very summit of 
the highest mountains. 
