428 FOREST CULTURE AND 
Tuber cibarium, Sibthorp.—Middle and South Eu- 
rope. The Black Truffle. Like all others, growing 
under ground, and generally found in forest-soil of 
limestone formation. It attains a weight over one 
pound. Experiments for naturalization may be effect- 
ed, with every prospect of success, by conveying the 
truffle in its native soil to us, and locating it in cal- 
careous places of our forest-regions. Asa condiment, 
or merely in a roasted state, it affords an aromatic 
food. ‘TIT. melanosporum, Vitt., from France, Germa- 
ny, and Italy, is of a still more exquisite taste than 
T. cibarium, indeed of strawberry flavor. Again, T. 
magnatum, Pico, from Italy, is of delicious fragrance. 
Ullucus tuberosus, Lozano. (Melloca  tuberosa, 
Lindl. )—Andes of New Granada and Peru, up to an 
elevation of 9,000 feet. A perennial herb, the tubers 
of which are edible. 
Urginia Scilla, Steinheil. (Scilla maritima, L.)— 
South Europe, North Africa. The medicinal Squill. 
The plant needs not regular cultivation, but settlers 
living near the coast might encourage its dissemina- 
tion, and thus obtain the bulbs as a drug from natural 
localities. Its peculiar bitter principle is called Scil- 
litin. 
Uvularia sessilifolia, L.—North America, in forests. 
This pretty herb is mentioned as yielding a good sub- 
stitute for asparagus. 
Vaccinium alatum, Dombey. (Thibaudia alata, 
Dunal.)—Frigid regions of the Andes of Peru. A 
tall, evergreen shrub, with pink berries of the size of 
a cherry. This highly-ornamental plant could be 
grown in our sub-alpine tegions. 
Vaccinium bicolor, F, v. M. (Thibaudia bicolor, 
