ROCK AND JAPANESE GARDENS, WALL CREVICES 139 



Pinus montana mughus Shortia galacifolia 



Dwarf Mountain Pine Shortia 



Pyxidanthera barbulata Taxus baccata repandens 



Flowering Moss Spreading English Yew 



Rhododendron carolinianum Taxus canadensis 



Dwarf Rhododendron Ground Yew 



Rhododendron ferrugineum Taxus cuspidata nana 



Rusty-leaved Rhododendron Japanese Yew 



B. DECIDUOUS TREES AND SHRUBS. Trees used in gardens of this 

 kind must be the low-growing types with a compact habit of growth, 

 and the shrubs also must be types which will lend themselves readily to 

 the character of this kind of garden. It is hardly possible to define 

 in words the exact character which the shrubbery must possess in order 

 to be valuable for this type of planting. The trees and shrubs in 

 this group may be used with safety, and there are many other shrubs 

 which can be selected from other lists and used by experts. 



Acer palmatum Evonymus obovatus 



Japanese Maple Running Strawberry Bush 



Azalea japonica Hypericum moserianum 



Japanese Azalea Gold-flower 



Azalea nudiflora Lonicera spinosa alberti 



Pinkster Flower . Large-fruited Honeysuckle 



Cotoneaster adpressa Philadelphus coronarius nanus 



Creeping Cotoneaster Dwarf Mock Orange 



Cotoneaster horizontalis Rhodora canadensis 



Prostrate Cotoneaster Rhodora 



Deutzia gracilis Viburnum opulus nanum 



Slender Deutzia Dwarf Bush Cranberry 



C. PERENNIALS. This group of plants forms one of the most 

 interesting phases of rock garden development. Most of these 

 perennials are either heavy in their texture of foliage, or very dwarf in 

 their habit of growth. They will adapt themselves to cultivation in the 

 congested spaces so often found in garden developments of this kind. 



Achillea boule de neige *Arabis alpina nana compacta 



Ball of Snow Dwarf Alpine Rock Cress 



*Alyssum argenteum *Arenaria montana 



Silvery Madwort Sandwort 



*Alyssum saxatile compactum Campanula carpatica 



Golden Tuft Carpathian Harebell 



Anemone pennsylvanica Centaurea montana 



Canadian Windflower Mountain Bluet 



Aquikgia canadensis *Cerastium tomentosum 



American Columbine Snow-in-summer 



*Plants especially well adapted for use in crevkes of walls and paved areas. 



