THE ASHES : THEIR CHARACTERISTICS AND MANAGEMENT. 11 
RELATIVE IMPORTANCE OF THE DIFFERENT SPECIES. 
The relative importance for commercial .or silvicultural purposes 
of the different species of American ash is shown in Table 4. 
Table 4. — Relative importance of the different species of ash. 
WHITE ASH GROUP. 
1. White ash (F. americana) Commercially and silviculturally the most impor- 
tant American ash. Commercially important 
east of the Mississippi, except in the Atlantic and 
Gulf Coastal Plain region. A tree primarily of 
fertile, moist, upland soils and of coves, and of 
stream banks where drainage is good. 
2. Texan ash (F. texensis) A variety of white ash of no commercial importance, 
but of some silvicultural possibilities. Occurs 
on dry limestone bluffs and ridges in northern, 
central, and western Texas, from^Dallas to the 
Devils River. 
3. Biltmore ash (-? 1 . biltmoreana) . A variety of white ash of some slight commercial 
importance and with good silvicultural possibili- 
ties. Adapted to somewhat drier sites and makes 
more rapid growth in youth. Chief occurrence 
in Tennessee, Kentucky, Ohio, and Indiana, 
especially on limestone formations, at lower 
elevations than white ash. 
GREEN ASH GROUP. 
4. Green ash (F. lanceolata) Commercially and silviculturally nearly equal to 
white ash in importance. Commercial occur- 
rence limited chiefly to the river bottoms subject 
to overflow of the Atlantic and Gulf Coastal 
Plains. Has extended up the Mississippi and 
its tributaries into Colorado, Wyoming, Montana, 
Manitoba, and Saskatchewan. The most widely 
distributed of the ashes. 
5. Mexican ash (F. berlandieri- No commercial importance. Chief occurrence in 
ana). Mexico. Used for street and plaza planting with 
good success in cities of the Mexican tableland, 
but of no importance for the United States. 
6. Pumpkin ash (F. profunda). .Of some slight commercial importance in river bot- 
toms in southeastern Missouri and eastern and 
central North Carolina. Found. in sloughs with 
cypress, where it is soft and of very slow growth. 
On well-drained land more rapid-growing than 
green ash, especially in youth, and has good 
silvicultural possibilities. Seed scarce. 
7. Red ash (F. pennsylvanica) . . .Of slight commercial importance because too infre- 
quent, but adapted to somewhat drier sites than 
green ash. West of the Mississippi often not dis- 
tinguished from green ash. 
