CHOICE PLANTS FOR ROCK GARDENS 149 
shady situation. During the growing season plenty of 
water will be enjoyed, but during winter the crowns and 
foliage cannot endure continuous wet. Either, therefore, 
the plants should be wedged between the perpendicular 
rocks of a shady watercourse, or they must be afforded 
the protection of a sheltering sheet of glass during winter 
as recommended for plants of silky or woolly foliage. 
The latter is probably the safer method for the novice 
to adopt, for it is not a simple matter to so fix a plant 
in a perpendicular wall or rock formation that it may reach 
with ease the moisture its roots must have access to during 
summer. 
HACQUETIA EPIPACTIS.—This is one of the quaintest 
little spring flowering plants, well worthy of inclusion 
in any collection, because of the interest it will arouse 
quite early in the year when flowers are very few. The 
blossoms open almost green, but the petals change to 
yellow, and are thrown into relief by a frill like an Eliza- 
bethan ruffle of amber-tinted bracts. The plant should 
be kept near by stepping-stones or pathways to facilitate 
the close inspection necessary to fully appreciate its peculiar 
charms. 
INCARVILLEA GRANDIFLORA.—there is no plant quite 
like Incarvillea grandiflora, and it should be afforded a 
place of honour in the best available position on the 
rockery, or in the foreground of the alpine bed. As a 
subject for pot culture, too, it is of superior merit, but its 
large tuberous roots necessitate a large pot, and as it 
flowers in summer accommodation in a frame where plenty 
of air can be given is preferable to the alpine house. 
