20 SILVA OF NORTH AMERICA. LEGUMINOS. 
bo 
was collected on the Rio Grande by the botanists of the Mexican Boundary Survey at about the same 
time, and near Kagle Pass by Schott in 1854. 
EXPLANATION OF THE PLATE. 
Puarte DCXXX. ACACIA TORTUOSA. 
. A flowering branch, natural size. 
A flower, with its bractlet, enlarged. 
. Vertical section of a flower, enlarged. 
. A fruiting branch, natural size. 
. Portion of a legume, natural size. 
se ao 
. A seed, enlarged. 
