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 Adenostoyna, which control 

 the area with fair completeness. The dotted line 

 indicates the area dominated by the large clump of 

 Arctostraphylos (Ar 34 ). 



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. Stems. 



Adenostoma 2 8 



Arctostaphylos 20 55 



Quercus durata 2 4 



Heteromeles 1 6 



Total 25 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- Gymnogramme triangularis. Galium californicum. 



nant. Pedicularis densifiora. 



There is considerable litter and a moderate amount of humus. 

 Bed rock is exposed in a few places. 



