42 ROSACEA. Crataegus. 



126. Crataegus Crus-galli, L. 

 Cockspur Thorn. Newcastle Thorn. 



Valley of the Saint Lawrence River, west through southern Ontario 

 to Manitoba, south, through the Atlantic forests, to western Florida, and 

 the valley of the Colorado River, Texas. 



A small tree, 4 to 10 metres in height, with a trunk sometimes 0.30 

 metre in diameter ; varying greatly in the size of the fruit, size and shape 

 of the leaves, etc. 



Wood heavy, hard, not strong, close-grained, compact, satiny, suscep- 

 tible of a fine polish; medullary rays numerous, very obscure; color 

 brown tinged with red, the sap-wood rather lighter. 



127. Crataegus coccinea, L. 



Scarlet Haw. Red Haw. White Thorn. 



West coast of Newfoundland, west along the valley of the Saint Law- 

 rence River and the northern shores of the great lakes to Manitoba, south 

 through the Atlantic forests to northern Florida and eastern Texas. 



A small tree, sometimes 'J metres in height, with a trunk 0.30 metre 

 in diameter; open upland woods or borders of streams and prairies; very 

 common at the North, rare at the South : running into many forms, vary- 

 ing in the size and shape of the leaves, size of the fruit, etc. 



Wood heavy, hard, close-grained, compact ; medullary rays thin, very 

 obscure ; color brown tinged witli red, the sap-wood a little lighter. 



128. Crataegus subvillosa, Schrad. 

 Scarlet Haw. 



Eastern Massachusetts (possibly introduced); central Michigan to 

 eastern Nebraska, south to middle Tennessee, and southwest through 

 Missouri, Arkansas, the Indian Territory, and Texas to the valley of the 

 San Antonio River. 



A small tree, 7 to 9 metres in height, with a trunk rarely 0.45 metre 

 in diameter ; rich woods and borders of streams and prairies. 



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

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

 lighter. 



The large red fruit often downy, edible, of agreeable flavor. 



129. Crataegus tomentosa, L. 



Black Thorn. Pear Haw. 



New Brunswick, west along the valley of the Saint Lawrence River 

 and the northern shores of the great lakes to the Saskatchewan region, 

 .southward through the Atlantic forests to western Florida and eastern 

 Texas, extending west to the mountains of eastern Washington and Ore- 

 gon, southwestern Colorado, and southwestern New Mexico. 



