bases. The white-powdered and the yellow-powdered forms 

 usually grow intermixed. The Palm Springs specimens are larger 

 and more vigorous than those from either of the other stations. 



Notholaena tenera Gillies. An exceedingly rare and local 

 fern of the southern desert region. First found in North 

 America in 1874 by Dr. Parry, in the Beaverdam Mts., of southern 

 Utah. It has_been collected since by Parish on the desert side of 

 the San Bernardino Mts., in 1882; in Arizona in 1884, on the Col- 

 orado river, by Lemmon ; at Palm Springs in the Colorado 

 Desert, in 1893, by Davidson; and recently by Purpus at Piute 

 Peak in the Mojave Desert, and by Brandegee (1902) in Provi- 

 dence Mts. So far as I am aware, these are the only collections 

 of the fern that have been made in North Amrica, except a some- 

 what doubtful one reported from the Santa Barbara Mts. It also 

 occurs in Chile. Crevices of rocks are its habitat. 



Adiantum Capillus-V eneris L. Venus' Hair. Most common 

 in the southern part of the State, extending as far north at least 

 as Santa Barbara, and south into Lower California. It is found 

 on shaded and wet, or commonly dripping, rocks, in the lower 

 mountains, probably not ascending above 3,000 feet alt. 



Adiantum cmarginatum Hook. Throughout the length of the 

 State ; in the south most abundant in the coast mountains, but in 

 central California (Amador county, etc.), in the Sierra Nevada. 

 It has been collected in the desert region by Coville in the Pana- 

 mint Mts., and by C. F. Saunders at Palm Springs in the Colo- 

 rado Desert. It is confined to low altitudes, and affects shaded 

 banks, or the base of rocks, in places which are wet during 

 the growing season, but which later become dry. 



Adiantum pedatum L. Maiden-Hair. This fern grows in the 

 crevices of shaded rocks throughout the whole length of the 

 Sierra Nevada, reaching in the south 7,000 feet alt. Northward 

 it is said to grow also in the Coast Range. 



Pteris aquilina lanuginosa Bong. This variety of the cos- 

 mopolitan bracken is found, mostly as an undergrowth in open 

 forests, in the mountainous parts of the State, from its northern 

 boundary, whence it passes far to the north, to its southern, and 

 tlience southward to the extreme point of Lower California. Of- 

 ten the whole face of the land is covered for miles with it. Along 

 the northern coast it is very luxuriant, growing in dense thickets, 



