Cralcegus. ROSACEA. 43 



A small tree, 6 to 9 metres in height, with a trunk rarely 0.45 metre 

 in diameter, or often, especially west of the Rocky Mountains, reduced 

 to a low shrub, here forming dense thickets along mountain streams ; 

 the most widely distributed representative of the genus in North America, 

 ami varying greatly in the size, shape, and color of the fruit, form of the 

 leaves, amount of pubescence, etc. 



Wood heavy, hard, not strong, close-grained, compact ; medullary rays 

 numerous, thin ; color bright reddish brown, the sap-wood lighter. 



130. Crataegus cordata, Ait. 



Washington Thorn. 



Virginia, southward along the Alleghany Mountains to northern 

 Georgia and Alabama, extending west through middle and eastern Ken- 

 tucky and Tennessee to southern Illinois. 



A small tree, 6 to 8 metres in height, with a trunk rarely 0.30 metre 

 in diameter, generally along banks of streams. 



Wood heavy, hard, close-grained, compact ; medullary rays numerous, 

 obscure ; color brown tinged with red, the sap-wood lighter. 



131. Crataegus apiifolia, Michx. 

 Parsley Haw. 



Southern Virginia, southward near the coast to about latitude 28°, ex- 

 tending west through the Gulf States to southern Arkansas and the valley 

 of the Trinity River, Texas. 



A small tree, rarely G to 9 metres in height, with a slender stem rarely 

 exceeding 0.08 to 0.10 metre in diameter, or more often a low, much- 

 branched shrub ; low, rich soil, reaching its greatest development on the 

 pine-barren hummocks of central Florida. 



Wood heavy, hard, very close-grained, compact, susceptible of a beau- 

 tiful polish ; medullary rays thin, very obscure ; color bright brown tinged 

 with red or rose, the sap-wood much lighter. 



132. Crataegus spathulata, Michx. 

 Small-fruited Haw. 



Virginia, southward to western Florida, west through the Gulf States 

 to the valley of the Washita River, Arkansas, and the Colorado River, 

 Texas. 



A small tree, G to 8 metres in height, with a trunk 0.20 to 0.25 metre 

 in diameter, or often reduced to a low shrub ; margins of streams and 

 prairies, common, and reaching its greatest development on the bottom- 

 lands of western Louisiana and eastern Texas. 



Wood heavy, hard, not strong, close-grained, compact ; medullary rays 

 very numerous, obscure ; color light brown or red, the sap-wood lighter. 



