b ERYTHEA. 



is greener than that of Gray Sage, Artemisia tridentata, and more- 

 gray than Greasewood, Sarcobatus. It is found among the lava, 

 much higher up on the hillsides than is Sarcobatus, and not infre- 

 quently a circular patch, several yards in diameter, is seen in the 

 Sarcobatus belt. This is probably the plant known as Gray -green 

 Sage in some districts. 



Kochia Calif ornica, which is but sparingly represented in the 

 Upper San Joaquin, though abundant across the Tehachapi, in the 

 Antelope Valley, Kern County, at an altitude of 2,500 feet, is rep- 

 resented by K. Americana in the Honey Lake Valley. The 

 latter species does not appear to occur west of the Sierra. It 

 sometimes grows among the Sarcobatus, at others, in patches free 

 from other vegetation, apparently indicating that a certain per- 

 centage of salts is especially favorable to its growth. 



Suaeda Torreyana is to be found commonly in the Sarcobatus 

 and Atriplex co?ifertifolia belts, especially where some efflorescence 

 is noticeable. Not infrequently it occurs in patches, alone, and 

 previous investigation makes it seem probable that in such cases 

 there is more sodium chloride and less sodium carbonate present, 

 than in the surrounding soil. 



The entire absence of Frankenia grandifolia campestris and 

 Sporobolus airoides from the Honey Lake Valley is one of the 

 striking features of its vegetation in comparison with that of the 

 San Joaquin. The Synoptical Flora mentions the former plant as 

 occurring on the plains near San Jacinto, southern California, and 

 in southern Nevada, and why it should not occur here, also, is not 

 clear, unless it is owing to excess of sodium carbonate. Sporo- 

 bolus airoides, so common in the San Joaquin Valley, and occur- 

 ring in Southern Utah and as far east as Kansas and Nebraska, 

 appears to be another "alkali weed" intolerant of strong sodium 

 carbonate. 



The general absence of Madioid Composite is very noticeable. 

 Not a Tar weed (Madia or Hemizonia) was to be seen, and the only 

 representative of the group met with was Layia glandulosa, which, 

 however, is quite common on the sandy alkali-free soil along the 

 bases of the foot-hills. 



In places supplied with more water, running or stagnant, than 

 the surrounding plain, as around the hot springs, an entirely differ- 



