68 
BEAUTIFUL GAKPEN FLOWERS. 
cilicicMm, Coum, cyprium, europaeum, grascum, ibericum, 
libanoticum, neopolitanum , and repandum, may be relied 
upon as tlie best, but even these are known by many 
other names. 
CRAMBE cordifolia. — This fine Caucasian per- 
ennial, about 6 feet high, is well worth a place in 
all large gardens. The large heart-shaped leaves 
are 12 to 18 inches wide, somewhat lobed, wavy, 
and wrinkled, and form a bold mass near the ground. 
The white cross-shaped blossoms appear in June and 
July, forming a branched truss often as much as 6 feet 
through. C pinnatifida is another perennial with 
large turnip-like leaves, and large trusses of white 
flowers. Both species flourish in ordinary garden soil, 
and may be increased by separating the large roots in 
spring, or by seeds. 
DAHLIA.- There are several species of Dahlia, all 
natives of Mexico. The numberless garden forms, 
both single and double — the latter including what 
gardeners know as Show, Fancy, Cactus, Decorative, 
and Bouquet or Pompon sections — have all been 
evolved in little more than 100 years from the single- 
flowered forms of D. coccinea, variabilis, and Merckei. 
The Cactus Dahlias, however, are of more recent 
origin. They have been developed from D. Jucirezi, 
which was introduced in 1872, and was first publicly 
exhibited in 1879. 
Planting. — Dahlias should be planted in the open 
air about the end of May or early in June when all 
danger from frost is over. They like a rich loamy 
soil, rather heavy, and with plenty of humus in it. The 
plants should be about four feet apart, otherwise, as 
