ROCK-PLANTS OF BANKS PENINSULA. 83 
* selecting-power”’ of the habitat, each part of the peninsula 
“ choosing’”’ the plant it likes best, is almost beyond belief; and 
yet for some reason or other the two species keep quite separate, 
their areas of distribution being separated only by a gap of barely 
a mile, where neither grows ! 
A species of Anisotome not yet bearing a name, it having been 
mistaken for A. Hnysii, confined likewise to Banks Peninsula, is 
also a member of this rock association. The other constituents 
are various shrubs or dwarfed trees which tolerate the rock life— 
e.g., a variety of the smooth-leaved koromiko (Veronica leiophylla), 
the broadleaf (Griselinia littoralis), the mountain - korokio (Corokia 
Cotoneaster), and the rock-akeake (Olearia Forsteri); the nao (Linum 
monogynum) ; the hard shield-fern (Polystichum Richard); some 
grasses ; a wood-rush (Luzula campestris), one or more of its many 
varieties ; and some other plants. 
