Prosopis. 



LEGUMINOS^E. 31 



A small tree, G to 12 metres in height, with a trunk sometimes 0.30 

 metre in diameter. 



Wood heavy, hard, very close-grained, inclined to check in drying, con- 

 taining many evenly distributed small open ducts ; medullary rays very 

 numerous, thin, conspicuous ; color light brown, the very thick sap-wood 

 lighter, often tinged with yellow. 



91. Cercis Canadensis, L. 

 Red-bud. Judas Tree. 



Western Pennsylvania, south to Tampa Bay, Florida, and northern 

 Alabama and Mississippi, west through southern Michigan and Minne- 

 sota to eastern Nebraska ; southwest through Missouri and Arkansas to 

 the eastern portions of the Indian Territory, Louisiana, and the valley of 

 the Brazos River, Texas. 



A small tree, 12 to 16 metres in height, with a trunk sometimes 0.30 

 metre in diameter ; rich woods, borders of streams, and swamps ; most 

 common and reaching its greatest development in southern Arkansas, the 

 Indian Territory, and eastern Texas. 



Wood heavy, hard, not strong, rather coarse-grained, compact, suscep- 

 tible of a good polish ; layers of annual growth clearly marked by one to 

 three rows of open ducts ; medullary rays exceedingly numerous, thin ; 

 color rich dark brown tinged with red, the sap-wood lighter. 



92. Cercis reniformis, Engelm. 

 Red-bud. 



Middle and western Texas west of the Colorado River ; in northern 

 Mexico. 



A small tree, 6 to 8 metres in height, with a trunk 0.15 to 0.20 metre 

 in diameter, or often a shrub forming dense thickets ; limestone hills. 



Wood heavy, hard, close-grained, compact; layers of annual growth 

 clearly marked by one to three rows of open ducts ; medullary rays 

 numerous, not conspicuous ; color brown streaked with yellow, the sap- 

 wood lighter. 



93. Prosopis julifiora, DC. 



Mesquit. Ahjaroba. Honey Locust. Honey Pod. 



Texas, — valley of the Trinity River to the northern and western limits 

 of the State ; west through New Mexico and Arizona to the western 

 foothills of the San Bernardino Mountains, California, reaching southern 

 Colorado, southern Utah, and southern Nevada ; in northern Mexico. 



A tree of the first economic value, sometimes 9 to 15 metres in height, 

 with a trunk 0.90 metre in diameter, or much smaller, often reduced to a 

 low shrub ; dry prairies and high rocky plains, or west of the Rocky 

 Mountains, along desert streams, here often forming open forests, and 



