Trans. N.Z. Inst., Vol. XLIX. 



Plate IV. 



[C E. Fowerdker, photo. 



Fig. 1. — Raoulia lutescens cushion on grade 2 terrace. (30 cm. rule in front of 

 cushion; Discaria toumatou in background.) 



[C. E. Fowerdker, photo. 



Fig. 2. — Cushion of Raoulia Haastii on grade 2. (Note invasion of cushion by- 

 other plants, especially tussocks of Festuca novae-zealandiae.) 



