Stony Debris Formations. e 229 
Fig. 71), but the shoots are much thicker and the leaves larger and more 
woolly. The great pale-yellow cushions 2—3 m long and 60 cm or more 
thick may dot the shingle-slip as far as the eye can reach. The larger ex- 
amples grow amongst the biggest stones but certainly, in many cases, are 
not attached to the underlying rock. They do not seem to grow on the finer 
debris. They are usually much longer than broad, and this is accentuated by 
the sliding stones from above piling up against them so that the upper surface 
may be partially buried. Many deaths take place from such burials. Various 
species are epiphytic on the cushions especially, — Danthonia flavescens, D. semi- 
annularis var. setifolia, Celmisia spectabilis and C. viscosa. 
Wet Mountain South Island Shingle-slip. Nearly all the chaäracteristic shingle- 
slip species are absent and various herb- or fell-field plants are present espe- 
cially, — Podocarpus nivalis, Acaena Sanguisorbae vars., Epilobium glabellum, ; 
Orxalis magellanica, Geranium microphyllum, Cotula Br Celmisia : 
Sinclairii and great sheets of Zeucogenes grandiceps (Western district), re. j nn, 
Sinclairü, Veronica Haastii var. macrocalyx, V. Cheesemanii and Eptlobium 
rubro-marginatum. The last three are virtually true shingle-slip species... ; 
Scoria Slopes on North Island Volcanoes. The scoria slopes of the Vol- 
canic Plateau, and Mount Egmont, present conditions quite as severe as true 
shingle-slip and, as on certain slopes of Mount Ngauruhoe, may ‚be without 
 plant-life. But ne are often a few species distantly dotted about e re 
j 'Luzula Colensoi, Claytonia australasica, Gentiana bellidifolia ‘) Ani are 
matica, Poa Colensoi and Gaultheria rupestris. The most characteristic plant An 
2.:0f, Baapehu etc. for this station is Veronica BR Fi (Plate, X XLIX A a 
3 River-bed. 
