76 BULBS AND TUBEROUS-ROOTED PLANTS. 
leaves being quite ornamental and produced in the great- 
est profusion. The flowers precede the leaves and con- 
tinue from August to October. 
C. ibericum (Iberian).—A native of the Caucasus ; 
flowers bright red in the type, with a bright purple spot 
at the base. 
C. neapolitanum (Neapolitan).-—-A close alliance 
with C. europeum. 
CYPELLA. 
A handsome greenhouse bulb, of easy culture. The 
flowers are yellow, with a dark stripe down each petal. 
C. Herberti, the only species, is a native of South Amer- 
ica. This is one of a large class of bulbs, beautiful, but 
not popular. It cannot be grown outside of the green- 
house, other than in the most temperate climates, and 
it has not a commercial value that will warrant green- 
house care. 
CYRTANTHUS. 
A small genus of deciduous and evergreen bulbs, 
from the Cape of Good Hope. While the flowers of the 
Cyrtanthus are all beautiful, and some singularly so, 
the difficulty in producing them, and in preserving the 
bulbs, is so great, in proportion, that they are rarely 
met. ‘They require treatment so different from nearly 
all other plants, that a house must be devoted to them 
alone, if success is to be attained. The ordinary green- 
house is too cold and damp; the stove house is too warm 
and damp. Hence the difficulty in their management. 
DAFFODIL. 
See Narcissus. 
DAHLIA. 
But few of the many genera of flowering plants have 
had so many ups and downs, in the way of popularity, 
as the Dahlia. When first introduced, the single forms 
