THE BROAD-SCLEROPHYLL VEGETATION OF CALIFORNIA. 



37 



Station 6. 



Passing over the second summit, we find Adenostoma still dominant 

 and greatly increasing in size and controlling power. Descending 

 the steep north slope a short distance, we encounter a gradual change 

 to conditions like station 3. Here station 6 was established. The 



Fig. 4. — Quadrat at station 4, 5 meters square. Note relative 

 fewness of individuals of Adenostoma, which control 

 the area with fair completeness. The dotted line 

 indicates the area dominated by the large clump of 

 Arctostraphylos (Ar"). 



shrubs are taller than in any previous station, averaging 1.8 meters, 

 and thoroughly control the ground. The summary of a quadrat 

 (fig. 5) follows: 



Clumps. Sterna. 



Adenostoma 2 8 



Arctostaphylos 20 56 



Quercus durata 2 4 



Heteromeles 1 6 



Total 26 73 



The bases of the stems have the large woody masses noted in 

 station 3, and the low shrubby and herbaceous species are the same, 

 with a number of new ones, most of which are characteristic of the 

 nearby forest. The list follows: 



Micromeria chamissonis. Rosa californica. Chlorogalum pomeridianum. 



Dominant. Trientalis europsea latifolia. Symphoricarpos racemosus. 



Aster radulinus. Domi- GsTnnogramme triangularis. Galium californicum. 



nant. Pedicularis densiflora. 



There is considerable litter and a moderate amount of humus. 

 Bed rock is exposed in a few places. 



