128 NEW ZEALAND PLANTS. 
association may be resplendent through the multitude of yellow 
blossoms of the swamp-lily (Chrysobactron Hookeri) (fig. 83). The 
pretty little New Zealand violet (Viola Cunninghamii) grow freely 
on the sphagnum-cushions, accompanied by the false edelweiss (Heli- 
chrysum bellidioides), a pretty willow-herb (Epilobium chloraefolium), 
the rather insignificant Halorrhagis micrantha, and the small Aniso- 
tome aromatica, a rosette-plant of the carrot family with deeply cut 
leaves. 
Montane and lower subalpine bog are easily invaded by tussock, 
especially the red-tussock (Danthonia Raouwlii var. rubra), or shrubs, 
and then are rapidly converted into tussock-grassland or shrubland, 
as the case may be. 
