( J 94) 



rounded at the base. The acorn mounted on the type sheet 

 and figured by Dr. Torrey does not belong to this species, 

 but other specimens give the character of the fruit. The cup 

 is hemispherical, 6-8 mm. in diameter and with short scales 

 thickened on the back ; the acorn is almost cylindrical or 

 barrel-shaped, obtuse or acute, about 10-15 mm - l° n g- None 

 of Sargent's figures is a good illustration of the true J£. un- 

 dulata; if the size and form of the leaves of Fig. 4 is com- 

 bined with the toothing of Fig. 10, a fair idea may be had of 

 the usual form ; the acorn is too short and too much 

 tapering. 



Jgicercus Fendlcri Liebman * as represented by the type, 

 Fendlcr, 805, and numerous specimens from Colorado and 

 New Mexico, is I think a fairly good species. The leaves 

 somewhat resemble those of 4L- undulata but are distinctly 

 lobed, with triangular lobes pointed forward, not spinulose 

 tipped. They are usually much thinner than those of J^. undu- 

 lata. They are tardily deciduous, as I have myself seen, 

 and not evergreen as those of several other forms included 

 in 4L undulata by Professor Sargent. Professor Greene's 

 figure, PI. 31, is excellent and his remarks about duration 

 of the leaves and differences from J^. undulata ought to have 

 called Professor Sargent's attention to their distinctness, even 

 if Jgj Fendleri is to be regarded only as a variety. The fruit 

 is, however, much larger and different in shape. The cup 

 is 10-15 mm. in diameter. The acorn is thicker but scarcely 

 longer than in the preceding, less cylindrical and more taper- 

 ing at the apex. Sargent's PI. 385, Fig. 15 is a good repre- 

 sentation. Figs. 6 and 7 represent the leaves, but the lobes 

 are generally more acute and longer. Fig. 8 illustrates the 

 leaf of a young shoot. 



Fcndler's No. 808, which is the type of Jgj undulata ypedun- 

 culata A. DC, I refer here, although the leaves have peculiar 

 cordate bases. The number referred to is represented in the 

 Engelmann herbarium by a young shoot, in which the leaves 

 nearly always adopt queer shapes. Young shoots of Jt>. un- 



*Oversigt Dansk. Vidensk. Selsk. Forhandl. 1S54: 171. 



