178 
AN AGAVE IN FLOWER. 
Among the collection of desert plants brought back from 
Arizona and Mexico by Dr. MacDougal in 1902, was an agave 
from the ee eee of Nogales, Arizona, a few miles north 
of the Mexican boundary. Some weeks ago this started to send 
up its flowering stem, and about the middle of August the first 
owers opened. The writer was unable to reach a satisfactory 
conclusion as to the species to which it belonged, it differing 
Fic. 29. Agave Palmeri Engelm., base of stem and leaves. 
considerably from any authentically named material in the collec- 
tions of the garden. It appears to be almost identical with two 
specimens in the herbaria at the garden, from the neighborhood 
of Janos, Chihuahua, Mexico, a small town about 150 miles east- 
ward of Nogales. 
