164 Professor Horneman on the Vegetation 
rarely in the other parts of Denmark. — The number of plants 
peculiar to it are about the same as in Laaland. 
Bornholm contains several subalpine plants, which it has in 
common with the southern and lower parts of Sweden and Nor- 
way. Carex extensa^ Ulex europaeus and Melilotus orXho- 
podioides, appear to have reached their most eastern and north- 
ern limits on Bornholm. Most of the subalpine plants grow on 
the primitive rocks ; the top of Bytterknegten, which is in this 
district, is the highest point of Denmark ; and according to Oer- 
sted and Esmarck, it is not more than 500 feet above the level 
of the sea. 
In this island, which has as yet been but slightly examined, 
we find about as many plants as in Laaland, which are not in 
the other islands. 
Ileswick only possesses 5 species, which are not found in the 
Danish provinces, or in Holstein, and 12 which are not found in 
Denmark, but which it has in common with Holstein and Lan- 
enborg. 
In Holstein are 77 species, which do not occur in the Danish 
provinces, 35 of which are not in the other duchies. 
Menyantlies nymphoides has its northern limit in the marshes 
of Holstein, and Cliondrilla juncea^ near Oldenborg, where Iso- 
etes lacustris is abundant. Poa sylvatica is first met with about 
Flensborg. In the neighbourhood of the salt-springs, near 01- 
desloe, grow a number of plants, whose natural situation is the 
sea- shore, though here they are several miles from it; as. Sal- 
sola Kal% Poa maritima^ Plantago maritima^ (which also occurs 
in the interior of Jutland,) Atriplex littoralis, and several others : 
In this neighbourhood Polygonum bistorta first appears. 
The reason why Holstein is so much richer than Sleswick, 
may be partly from its freer communication with the Continent, 
by the help of the Elbe, and partly from its more southern si- 
tuation ; for as to soil, &c, they are much alike. 
Lanenborg is situated near Mecklenborg, a land which shews 
an extraordinary anomaly in possessing plants belonging to a 
much more northern vegetation, as Ledum palustre^ Linnaa bo- 
realis, Pedicidaris sceptrum, Cinclidium stygiam, &c. It pos- 
sesses 104 species which are not found in the Danish provinces, 
66 of which do not occur in the other duchies. 
