760 



TREES OF NORTH AMERICA 



A tree, rarely 20 high, with a short trunk 6'-8' in diameter, and slender terete 

 brauchlets light red-brown when they first appear, soon beeoniing darker and marked 



by scattered pale lentlcels, and ashy gray and roughened by the dark elevated lunate 

 leaf -sears in their second year; more often a shrub, with numerous slender spreading 

 stems 6-8 tall. "Winter-buds terminal, acute, nearly ^' long, with dark reddish 

 brown glutinous scales. 



Distribution. Rocky slopes and dry ridges; valley of the Rio Grande in south- 

 western Texas and southeastern New Mexico, and southward to the mountain slopes 

 of Coahuila, Chihuahua, and Nuevo Leon; a shrub within the territory of the United 

 States, and probably arborescent only on the mountains of Chihuahua; still very 

 imperfectly known. 



2. Fraxinus Greggii, Gray. 



Leaves l|'-3' long, with winged petioles, and 3-7 narrowly spatulate to oblong- 

 obovate leaflets entire or occasionally coarsely serrate above the middle, with remote 



f/^ 6o(b 



blunt teeth, slender midribs, and obscure reticulate veins, thick and coriaceous, dark 

 green on the upper, rather paler and covered with small black dots on the lower 



