430 THE PRINCIPLES OF FLORICULTURE 



show or fancy types, and are mostly solid colors or have the 

 petals tipped with lighter tints. This class is an intermediate 

 one between the show and cactus types. Varieties are : 



Black Beauty, maroon. 



Mrs. Keith, salmon pink. 



Mrs. Charles Turner, pure yellow. 



William Agnew, red. 



Flora, white. 



Nymphea, pink. 



(/) Single: The single form is quite popular, but has not very 

 good keeping qualities. They have but one row of petals, 

 usually eight, and embrace a wide range of colors. They show 

 a great variation of form, from horizontal rays to reflexed or 

 incurved. Varieties are : 



Albine, white. 

 Jack, scarlet. 

 Twilight, lavender. 

 Blackbird, maroon. 

 Gaillardia, yellow and red. 



(<7) Tom Thumb is a race of dwarf dahlias producing round, 

 single flowers. They grow from twelve to eighteen inches high, 

 forming dense bushes .which flower very freely. 



(h) Collarette. Collarette dahlias have one row of ray-flowers 

 like the single type, with an additional row of short ray-flowers 

 inside them. These ray-flowers form a frill or collar from 

 which the name of the type comes. The collar is usually dif- 

 ferently colored than the outside row of ray-flowers. With few 

 exceptions collarette dahlias are of French origin. Some good 

 varieties are : 



Grayhound The Peach 



Heatherbone Yellow Prize 



Maurice Revoire Meteor 



Jumbo Exposition De Lyon 



Habitat. Native of high, sandy plains of Mexico, 

 where it was discovered by Humboldt about the year 

 1815, growing as a single form, five thousand feet above 

 sea level. 



722. History. The dahlia was introduced into Europe 

 about the year 1875 and apparently proved popular in 



