ON THE WORLD-DISTRIBUTION OF BRITISH PLANTS. 85 
zores, Madeira, and the Canaries; the Northern chiefly to the Faroe 
Islands and Iceland; and they thus form an intermediate step towards 
the next two divisions, the plants contained in which are found in the 
New World as well. Some of these are also to a certain degree inter- 
mediate, being found in America only in Greenland, whose Flora is 
Rocky Mountains; and a few occur only in the Aleutian Islands, 
which occupy the same intermediate position on the Pacific that 
Iceland and Greenland do on the Atlantic side. Division II. contains 
IV., which, for want of a better term, may be called Universal, com- 
prises plants which spread into all the three continents of the Northern 
Hemisphere. t of 
e e a number which more properly deserve to be calle 
“ Universal,” for they are met with in the Southern Hemisphere ; and 
some are true cosmopolitans, being found almost all over the globe, 
nour I. Southern Europe.—This group comprises 223 species, 
which mostly belong to the Mediterranean district, and are generally 
more abundant there than with us. Many of them (87, or 89 per 
Section 1. Twenty species which are found in the Spanish Penin- 
sula, and thence range Northwards to the British Islands. 
Section 2. Eighteen species which do not extend Eastward along 
the Mediterranean beyond Italy, and in crossing Europe are not found 
East of Germany proper. 
Section 8. Sixty-four species which either range along the Medi- 
. terranean beyond Italy, or in passing North stretch into Austria, but 
are not found in Russia. ‘ae 
ection 4. One hundred and twenty-one species which pass the 
frontiers of Russia Eastward. 
Grover II. Zemperate Ewrope.—This is smaller than the preceding 
group, and contains only 73 species, of which 8 (or 11 per cent.) have 
been recorded from the Isles of the Atlantic; and 15 (or 
20 per cent.) from the Faroes or Iceland, termed hereafter the 
Northern Isles; 15 (or 20 per cent.) reach North Africa; while only 7 
