PLANTS VALUABLE FOR USE IN ROCK GARDENS, IN JAPANESE GARDENS, AND IN WALL CREVICES : Page 340
American Columbine Snow-in-summer
*Plants especially well adapted for use in crevices of walls and paved areas.
Ceratostigma plumbaginoides Nepeta mussini
Leadwort Catmint
Coreopsis verticillata Pachysandra terminalis
Dwarf Tickseed Japanese Spurge
Coronilla varia *Phlox stolonifera
Crown Vetch Creeping Phlox
Dalibarda repens Phlox subulata