February 20, 1906 151 



Xyi.orrhiza TORTIFOUA (T. & G.) Greene, Pittonia, 3: 48. 



1896. 

 Aplopappus tortifolius T. & G. Journ. Bost. Soc. Nat. Hist. 



5: 109. 1845. 

 Aster tortifolius Gray, Proc. Am. Acad. 7: 353. 1868. 

 Aster Mohavensis Coville, Cont. U. S. Nat. Herb. 4: 126. 



1893. 



No. 7755, collected April 24, on the rocky lower slopes of 

 the mountain about three miles southwest of Mojave, Kern 

 county. It was noticed ten days earlier in similar situations 

 at Randsburg, hardly in flower. 



Erigeron californicus Jepson, Bull. Torr. Club, 18: 324. 

 1 891. 

 No. 7579, collected March 22, on the slopes of the ridge op- 

 posite South Butte, Marysville Buttes, Sutter county, plentiful 

 on the precipitous sides of deep ravines, the flowers pinki.sh. 

 From type locality. 



Erigeron divergens T. & G. F1. N. A. 2: 175. 1841. 



No. 7869, collected May 26, in gravel and sand at the river 

 bridge near Redding, Shasta county. In the original from the 

 "Rocky Mountains, and plains of the interior of Oregon," the 

 rays were white. In our specimens they are pale blue. 



Ertgeron philadelphicus L. Sp. PI. 863. 1753. 



No. 8028, collected June 13, in moist places along the rail- 

 road near Shasta Springs, Siskiyou county, the flowers pinkish. 

 They are usually white in the Pacific coast form. 



Erigeron coNCiNNus (H. & A.) T. & G. Fl. N. A. 2: 174. 

 1841. 



Ditasisl concinna H. & A. Bot. Beech. 350. 1840. 



No. 8063, collected along the railroad near Grenada station, 

 Siskiyou county, where it is plentiful. The type was from the 

 "Snake River below the Salmon Falls, Snake Country,'' Idaho. 



