96 BULBS AND TUBEROUS-ROOTED PLANTS. 
planting in different exposures, a succession may be had 
from February to May. It is, however, for early flowers 
that they are planted; they tell us when spring is com- 
ing, and that more showy forms are soon to follow. 
The few species that make up this genus are: 
SNOW DROP—SNOWFLAKE. 
G. nivalis.—The single form is the common Snow- 
drop, a native of England, where it is found in woods 
and shady dells; the double form is a garden variety of 
this species, and is usually smaller than the wild single 
plant. 
~~ 
