LET’S KNOW SOME TREES 29 
we) growth. It is more often a mere shrub, but has been found as large 
as 30 feet high and 10 inches in diameter. 
Red birch has very. small, saw-toothed leaves of an oval type. 
Like the alders, the seeds come in tiny cones, but these fall to pieces 
when the seeds mature; and, anyhow, there is only one cone in a 
place instead of the branched twig holding several cones and per- 
sisting long after the opening bracts have let the alder seed fly out. 
2 mi a eae ; 
ir 
F50801 
i ae FIGURE 18.—Mountain alder (Alnus tenuifolia) 
You can see this dainty little birch at the south end of Shasta 
Valley, in the canyons on the west side of Owens Valley; near Mono 
Lake, above Simpson meadow in the Middle Fork of Kings; also in 
Bubbs Creek Canyon, in the Siskiyou Mountains, and elsewhere. 
PALM, YUCCA, INDIGO BUSH 
‘In spite of the advertising on the Atlantic coast of “ native Cali- 
fornia dates,” in spite of the long-time experiments with date-bearing 
