CRUCIFER^]. 227 



3. STREPTANTHUS, Nutt. 



1. Streptanthus tortuosus, Kellogg. 



Hab. Mountainous region in the upper part of the valley of the 

 Sacramento, California ; among loose rocks. — Root biennial. Stem 2 

 or 3 feet high, with a few erect branches. Leaves thick, and appar- 

 ently somewhat fleshy ; the radical ones about 2 inches long, narrowed 

 at the base; the cauline numerous and approximated, an inch in 

 length, with a very deep sinus at the base. Sepals ovate-oblong, ob- 

 tuse, hairy at the tip externally. Petals narrowly rhomboid-lanceolate, 

 undulate, greenish? with purple veins, nearly twice the length of the 

 calyx. Pod 2 inches or more in length, less than 2 lines wide, falcate, 

 curved downwards. Seeds with a narrow margin on the radicular 

 side. [This was not unnaturally thought to be S. cordatus of Nuttall, 

 and is the plant so named by Torrey in Whipple's Expedition. It 

 was set right in the monograph of Streptanthus, and the true S. cor- 

 datus of Nuttall has since been elucidated by S. Watson in the Botany 

 of King's Exploration.] 



4. T U R R I T I S, Dill. 



1. Turritis macrocarpa, Nutt. in Torr. & Gray. 



Hab. Nisqually, Puget Sound : not uncommon. — Too near Turritis 

 glabra, which it represents on the Pacific coast. 



2. Turritis patula, Graham. 



Hab. Interior of Oregon and Washington Territory ; a species of 

 wide range and diverse forms, some of them apparently passing into 

 the next. 



