46 BULLETIN 797, TJ. S. DEPARTMENT OF AGRICULTURE. 
D. Parrots. Segments of flowers cut or laciniated. 
Sensation, Markgraaf, Lutea Major, Admiral de Constantinople. 
E. Doubles. Blue Flag, Mariage de ma Fille, Orange Brilliant, Yellow Rose. 
section in. 
Species of tulips growing in the state of nature. 
Clusiana, Greigii, Hageri, Praestans. Sylvestris. 
VARIETIES OF HYACINTHS. 
Hyacinths are listed by color in singles and doubles, the singles 
being much the more popular. They are offered for sale in several 
classes, such as miniatures and first and second sizes, which are 
approximately 18 and 16 cm. bulbs, respectively. Besides these, 
there is commonly a miniature size (about a 13-cm. bulb) offered for 
bedding and growing in pots. 
The Dutch-Roman hyacinth is growm the last year in the south of 
France, where the season is earlier and the bulbs are consequently 
capable of being forced into blossom correspondingly earlier than 
Holland-grown stocks of the same varieties. 
The " Dutch prepared " hyacinth is a recent invention, being the 
ordinary Dutch varieties grown in the Netherlands, but dug early 
and incubated in artificial heat for the purpose of accelerating the 
development of the flower buds during the dormant period. These 
are also capable of being forced into flower earlier. These bulbs are 
often "soft," due to withering under the artificial treatment, and 
their appearance is consequently not necessarily an index to their 
performance. 
These early forcing varieties, especially the " Dutch prepared," 
often are not successful in this country, mainly owing to improper 
conditions for rooting. Our atmospheric and soil temperatures in late 
August and .early September are too high to root them properly 
except in cool cellars. 
The Roman hyacinth is also offered along with the Dutch varieties. 
It is early, more graceful than the stiff Dutch varieties, and is 
grown in southern France. It is adapted only to indoor culture ex- 
cept in the South, while the Dutch varieties are hardy. 
The following list, considered from the standpoint of availability 
and performance, is suggestive. The varieties are those commonly 
offered for sale and, of course, the leading and most popular sorts. 
Single red and rose. 
Gertrude, Gigantea, Roi des Beiges, General de Wet, Lady Derby. 
Single white. 
L'Innocence, Mr. Plinisoll, Baroness van Thuyll, Madam van der Hoop. 
^in/lie blue. 
Captain Boyton, Grand Maitre, Queen of the Blues, Marie, Scliotel. 
