296 



SYLVA AMERICANA 



ROBINIA. 



Diadelphia Decandria. Linn. Leguminosoe. Jiss. Aperient, diuretic, 



emollient. 



Locust. Robhiia pseudo acacia. 



From the excellent prop- 

 erties of its wood, and the 

 beauty of its foliage and 

 flowers, the Loc*ust ranks 

 in the first class of the trees 

 of the American forests. In 

 the Atlantic States, it begins 

 to grow naturally in Penn- 

 sylvania, between Lancaster 

 and Harrisburgh, in the 

 latitude of 40 20'. West 

 of the mountains, it is found 

 two or three degrees farther 

 north ; which is explained 

 by an observation already 

 repeated, that, in proceeding 

 towards the west, the climate 

 becomes milder and the soil more fertile. But the locust is most 

 multiplied in the south-west, and abounds in all the valleys 

 between the chains of the Alleghany Mountains, particularly in 

 Lime Stone Valley. It is also common in all the Western States, 

 and in the territory comprised between the Ohio, the Illinois, the 

 lakes and the Mississippi. It is not found in the states east of 

 the river Delaware, nor does it grow spontaneously in the 

 maritime parts of the Middle and Southern States, to the distance 

 of from 50 to 100 miles from the sea, all the stocks that are seen 

 in these parts having been planted at different periods. The soil 

 in which it appears to thrive best, is a light and somewhat sandy 

 loam in situations having a southern aspect. 



Fi3. i. 



PLATE XCII. 



A leaf. Fig. 2. Apod. 



