{ Dune. y TR 
N. shore of Foveaux Strait Raoulia australis may be plentiful, and in the North 
- Auckland district Zleocharis neo-zealandica builds slightly raised patches. 
If the hollow does not become moist, Carer pumila early takes possession, 
increasing at a great rate through its far-creeping rhizome. A rapid drift 
favours Spimifer in the N. and C.; it quickly builds multitudes of low, rounded 
. mounds. . 
j f. Sand-heath. 
; Generally at some distance inland, but occasionally just beyond the fore- 
k dune, the sand-hollows may be closely covered by heath with Zepzospermum 
scoparium dominant (Plate VI Fig. 8). In the North Auckland district many 
species of the gumland heath may be present, especially — ZLeptospermum 
lineatum, Pomaderris phylicaefolia, Styphelia fasciculata, S. Fraseri and Pimelea 
F prostrata. Cassima retorta will be in abundance and there will be more or less } 
Mariscus ustulatus, Phormium tenax and Arundo conspieua. 
On the northern shore of Cook Strait, Z. scoparium often forms a closed‘ 
association, especially where the surface is wet, when certain swamp-plants 
will be present, e. g. —. Eleocharis Cunninghamii, Carex ternarıa, Potentilla 
anserina var. anserinoides and Coprosma propingua. 
8. Ancient dunes. 
=“ Aucknt Sands occur in the South Otago district near the Bluff Estuary 
and along the lines of the ancient straits of Stewart Island. The Bluff dunes 
are separated from the Estuary by Sphagnum moor. They are covered with 
| ' Dantkonia Raoulii-steppe, and the following non-dune, frequently subalpine 
.. plants, are present: — Blechnum penna-marina, Lycopodium a ae Gaul- er 
 theria perplexa, Helichrysum bellidioides. The Stewart Island dunes bear a 
heath-vegetation, as follows: — — Leptospermum scoparium (dominant), Gleichenia“ 
= dıcanpa (abundant), Preridium eseulent: m, Lycopodi nulosum, 
dis 
