274 



[Vol. 9 



GARDEN 



County, May 15, 1906, Heller 8262 (Univ. Calif. Herb, and Mo. 

 Bot. Gard. Herb.) ; near Big Pine, May 30, 1906, Hall & Chandler 

 7226 (Univ. Calif. Herb.). 



A rather polymorphic species occurring in its typical form in 

 eastern Washington and Oregon where it is characterized by 

 slender, acute leaf segments. The type of T. leptosepalum ac- 

 cords very well with the drawing that accompanies the original 

 description of T. laciniatum by Hooker. 



10a. Var. streptanthoides (Leiberg) Payson, n. comb. 



T. laciniatum Piper & Beattie, Fl. Palouse Region, 82. 1901, in 

 part. 



T. streptanthoides Leiberg, Contr. U. S. Nat. Herb. 11: 299. 

 1906; Piper & Beattie, Fl. Southeastern Washington and Adj. 

 Idaho, 117. 1914. 



Leaves rather thin, deeply pinnatifid, lobes acute, narrow: 

 sepals slightly saccate at the base, purple, at least on the upper 

 third; petals white, linear: pedicels horizontal: pods recurved, 

 glabrous, 6-12 cm. long. 



Distribution: eastern Washington and Oregon. Type: Sand- 

 berg & Leiberg 229 from "near Wilson Creek, Douglas County, 

 Washington." 



Specimens examined: 



Washington: Almota, May 27, 1893, Piper 1473 (Rky. Mt. 



Herb.) ; junction Crab and Wilson Creeks, Douglas County, June 

 19, 1893, Sandberg & Leiberg 229 (Mo. Bot. Gard. Herb.). 



Oregon: Riparia, May 31, 1905, Jones (Mo. Bot. Gard. Herb.) ; 

 The Dalles, May 4, 1906, Lunell (Rky. Mt. Herb.). 



Aside from the conspicuous color of the sepals little difference 



seems to exist between the variety and the typical form of the 



species. The leaves are said to be thinner and not at all glaucous. 



It is extremely doubtful, however, if this correlation will be found 



to be without exception, and further collections may show this 

 plant deserving of formal rank only. 



10b. Var. milleflorum (A. Nelson) Payson, n. comb. 



T. laciniatum Robinson in Gray, Syn. Fl. N. Am. I 1 : 177. 1895, 

 in part; Howell, Fl. Northwest Am. 58. 1897, in part; Piper, 

 Contr. U. S. Nat. Herb. 11: 299. 1906, in part. 



T. milleflorum A. Nelson, Bot. Gaz. 52: 263. 1911; Frye & 

 Rigg, Northwest Fl. 180. 1912 ; Rydb. Fl. Rocky Mountains, 367. 

 1917. 



