DECIDUOUS TREES. 115 
_ These lobes also have different forms, being round, point- 
ed, toothed, etc. The White Oak (Q. alba) has oblong, 
obtuse-lobed leaves, as shown in fig. 37, but the form of 
Fig. 37. 
the whole leaf is obovate oblong. Another prominent 
characteristic, and one employed by botanists in deter- 
mining the different species, is the acorns, some being 
small, with a sharp point, and set in a shailow cup like fig. 
