38 THE BROAD-SCLEROPHYLL VEGETATION OF CALIFORNIA. 



Station 7. 



Descending still farther, the slope becomes steeper and we pass 

 through a transition zone into the forest which clothes the lower 

 part of this north-facing hillside. It is not an extensive area, the 

 altitudinal distance covered by it being only 40 meters, but it is 

 nevertheless well developed and typical in every way. Two stations 

 were located in it. Station 7 is in a representative spot 12 meters 



Fig. 5. — Quadrat at station 6, 5 meters square. Note likeness 

 to station 3 (fig. 3). 



above the bottom of the ravine. Since trees are the dominants 

 here, it was necessary to increase the size of the quadrat to 10 meters 

 on a side. This quadrat, therefore, equals in area 4 of those in other 

 localities. A summary, as far as the dominants are concerned, is 

 given (fig. 6): 



Clumps. Stems. 



Quercus agrifolia 6 6 



Arbutus menziesii 2 8 



^Esculus californica 2 2 



The specimens of Quercus and JEsculus are all single-stemmed 

 individuals. Those of the latter species are of little importance, 

 being but 3.8 and 6.3 cm. in diameter. The oaks range in diameter 

 from 3.8 to 36 cm., four being 10 cm. or larger. The eight Arbutus 

 stems are in two clumps of large stump sprouts, a very common 

 habit of the species. The diameters of the individual stems range 

 from 10 cm. to 18 cm. The area is shaded and controlled by the 



