December 31, 1906 203 



Sophia californica (T. & G.) Rydb. 



No. 8218, collected May 9, in Silver canyon in the White 

 mountains opposite Laws, Inyo county, growing in gravel on 

 the floor of the canyon. Plentiful there as well as west of 

 Bishop in granite. The plants are greener and less pubescent 

 than my no. 7763, collected near Mojave last year, but appear 

 to be the same. 



Phoenicaulis pedicellata (Aven Nelson) 



Arabis pedicellata Aven Nelson, Proc. Biol. Soc. Wash. 

 1^: 91. 1904. 



Streptanthus pedicellatMS Aven Nelson, 1. c. 92. 



No. 8293, collected May 21, in the first canyon south of 

 Bishop, Inyo county, in the Sierra foothills on steep slopes in 

 coarse granite sand. Our plant has somewhat broader and more 

 obtuse leaves and apparently smaller flowers than Baker's 991, 

 mentioned under this species by Nelson in Proc. Biol. Soc. 

 Wash. 18: 187. 1905. The type is no. 705, Kennedy and True, 

 from Hunter creek canyon, near Reno, Nevada. This plant 

 does not look like an Arabis in the field, and I think Nuttall's 

 Phoenicaulis should be maintained. In accord with present day 

 tendencies, several genera are liable to be segregated from Ara- 

 bis in the near future. 



Arabis pulchra Jones; Wats. Proc. Am. Acad. 33: 468. 1887. 

 No. 8191, collected May 7, on the steep slopes of Silver 

 canyon in the White mountains opposite Laws, Inyo county, 

 growing in slate formation. Rather plentiful but scattered, a 

 few plants growing here and there about rocks. The original 

 from "valleys of western Nevada." 



Arabis beckwithii Wats. Proc. Am. Acad. 32: 467. 1887. 



No. 8259, collected May 15, in the Sierra foothills near the 

 county hospital at Big Pine, Inyo county, growing near rocks in 

 coarse granite sand. The original was collected by Beck with at 

 Quartz mountain, Nevada. 



