The Vegetation of the Chatham Islands. 
4 in the Northern and Central, ır in the Central and Southern and 4 in the 
Southern. Of the above mainland plants 42 belong also to the Subantarctic 
province and 22 to the Kermadec. The endemic element is remarkable as 
containing 20 species‘) (62 p. c.) closely related to one or more of those of the 
 mainland, so that, at first glance many can hardly be distinguished. On the 
other hand, the endemic genera Corella and Myosotidium, as also the endemic 
Festuca and Geranium together with Olearia Traversü, Cotula Featherstonü 
and its ally C. Renwickis stand out distinct from other New Zealand plants 
and represent either species of an earlier flora or such as were once found 
on the mainland. | 
The ecological conditions of the Chatham Islands consist of a combination 
of coastal, rain-forest and subantarctic factors. Thus, at no part of the main 
island are you distant 7 km from the sea and the extreme is, in most places 
less than one half of this. ‚High winds are frequent, especially those from the 
 N.W. and S.W. The rainfall is not great, .but the number of wet days is 
Ei, NG while cloudy skies are frequent. Frost is trivial and snow falls but 
en The soil in many parts consists of peat frequently more than 6 m in 
depth and always in a complete state of saturation. There is however, in 
certain localities, a much more fertile soil known locally as “red clay”, the out- 
come kom BT RTENE, of the volcanic rock. The main features of the vege 
Pt “ ‚iognomic Plants N their Growth-forms.. 
> plants common on the main islands of New Zealand 
N, ‚seen ‚further Sri ver rind the climatic and edaphie 
En 
