— 12— 



with rainfall insufficient to maintain these pools, and conse- 

 quently without affording the Pilularias an opportunity for 

 growth. Reported also from Santa Barbara, probably under sim- 

 ilar conditions, and may be expected, in suitable situations, in the 

 intermediate territory. 



SALVINIACEiE. 

 Azolla aiiculoides Lam. This pretty little plant is very com- 

 mon in the southern part of the State, below 1,000 feet alt. It 

 floats on the still pools of streamlets, or roots in their muddy 

 banks, and, in either case, is gregarious in dense patches. The 

 fronds are commonly brightly tinted with red. A. Caroliniana 

 Willd. may occur in the north, but authentic specimens are not 

 known. 



equisitace;e. 



Bquisetum arvense Linn. In damp soil, notably on the borders 

 of copses, in the Sierra Nevada, from San Bernardino county 

 northward, at 3,000 to 8,000 feet alt., or more rarely descending 

 as low as 1,000 feet. Probably also through the Coast Range, 

 but the only specimens seen therefrom are from Ojai, in Santa 

 Barbara county. 



Bquisetum Telmateia Braunii Milde. From San Bernardino 

 to San Francisco, growing on the borders of swamps and streams. 

 It is confined, apparently, to an altitudinal range not exceeding 

 1,000 feet. 



Bquisetum rammosissimum Desf. There is in the her- 

 barium of the National Museum a single sterile specimen that is. 

 confidently referred by Mr. A. A. Eaton to this species, which is 

 not known otherwise in North America. It was collected on 

 Mt. Wilson, near Los Angeles, by Dr. A. Davidson. Further 

 material is desirable. 



Bquisetum Funstoni A. A. Eaton. This is the most abundant 

 scouring-rush in southern California. Its range extends from 

 Santa Barbara to San Diego and San Bernardino ; and it also 

 reaches the desert region, where it has been collected at White- 

 water, Palm Springs, Camp Cady, and in the Panamint Mts. 

 On the hither side of the mountains its altitudinal range is prob- 

 ably not over 2,000 ieet, but in the Panamint Mts. it was found as 

 high as 5,300 feet alt. It grows in damp, or occasionally in quite 

 dry, soil, and mostly in partial shade. It runs into a series of di- 



