264 ROCK GARDENING FOR AMATEURS 



BOG OR MOISTURE-LOVING PLANTS 



Caltha palustris Orchis foliosa 



Cypripedium spectabile maculata 



Epipactis palustris Ourisia coccinea 



Galax aphylla Primula bulleyana 



Gentiana asclepiadea farinosa 



Pneumonanthe involucrata 



Helonias bullata japonica 



Iris cristata pulverulenta 



sibirica rosea 



Leucojum aestivum sibirica 



. vernum sikkimensis 



Linnaea borealis Ranunculus aconitifolius 



Lobelia cardinalis and others 



Mimulus Saxifraga aizoides 



Nierembergia rivularis Hirculus major 



Trillium 



PLANTS FOR POOLS AND PONDS 



(Those suitable for 12 inches of water or less are 

 marked thus*.) 



Alisma *Iris sibirica in variety 



Aponogeton distachyon *Lysimachia thyrsiflora 



Butomus umbellatus *Myosotis palustris 



*Caltha palustris Nuphar lutea 



Cyperus longus Nymphaea 



Epilobium hirsutum Polygonum amphibium 



Hippuris vulgaris Pontederia cordata 



Hottonia palustris Ranunculus aquaticus 



*Iris Pseudo-acorus Lingua major 



*Monnieri Sagittaria sagittifolia 



ALPINES WITH GREY OR VARIEGATED LEAVES 



Included in this list are several with variegated 

 foliage ; these give a white or silvery effect at a dis- 

 tance. Such plants generally prefer a dry soil, and 



