462 PHANEROGAMOUS PLANTS. 



commonly about 2 inches long, tapering to a point, and often a little 

 curved; but sometimes they are much shorter, ovate, and rather 

 obtuse, in which state the species was described by Nee more than half 

 a century ago as Q. lobata. The Q. longiglanda, of Fremont's Geo- 

 graphical Memoir on California and Oregon, is this tree with long 

 acorns. The cup is shallow and tuberculatc, with thickened scales. 

 On young and vigorous shoots the leaves are acutely lobed. 



Plate 15. Quercus lobata : Branch in fruit. Fig. 1, 2. Leaves. 

 3, 4. Acorn and cupule. All of the natural size. 



6. Quercus Garrtana, Booh. 



Quercus Garryana, Hook. Fl. Bor.-Amer. 2, p. 159 ; Nutt. Sylv. 1, p. 1, t. 1. 



Hab. Near Nisqually, Puget Sound, and on the Walla -Walla 

 River. — We have no mature fruit of this species, and it is remarkable 

 that Nuttall has not given a figure of the acorn. This is another 

 oak of the group to which Q. alba belongs. It occurs from 40 to 80 

 feet or more in height, and 3 to 6 feet in diameter. The wood is used 

 for ship-building, and Mr. Nuttall states that it is quite equal to that 

 of the White Oak. 



7. Quercus Douglasii, Rook. & Am. 



Quercus Douglasii, Hook. & Arn. Bot. Beech, p. 391 j Hook. Ic. 4, t. 383 & 384 ; 



Nutt. Sylv. 1, p. 10, t. 4. 



Hab. Northern California, southward to San Francisco. — This 

 species is sometimes rather difficult to distinguish from Q. lobata, 

 especially when the leaves are deeply cut. In Q. Douglasii the lobes 

 are more acute, and form a more acute angle with the midrib, while 

 the sinuses are narrow and more acute ; also the scales of the cup 

 are flat; not tumid, as in Q. lobata. In our specimens from the 

 neighborhood of San Francisco the acorns and leaves are considerably 

 smaller than those represented in Hooker's figure. Dr. Pickering 

 states that the tree is about 40 feet high. 



