1922] 



PAYSON — STUDY OF THELYPODIUM AND ITS IMMEDIATE ALLIES 293 



ler Mountain, Esmeralda County, June 6, 1882, Shockley 252 



(Univ. Calif. Herb, and Mo. Bot. Gard. Herb.) ; Gold Mountain, 



May-Oct., 1898, Purpus 5992 (Univ. Calif. Herb.) ; Good Springs, 



Clark County, May, 1915, K. Brandegee (Univ. Calif. Herb.) ; 



Furber, June 9, 1891, Jones (Univ. Calif. Herb, and Mo. Bot. 



Gard. Herb.). 

 California: Nelson Range, Inyo County, May 23, 1906, Hall & 



Chandler 7160 (Univ. Calif. Herb.). 



8a. Var. glaber Jones, Zoe 4: 266. 1893; Robinson in Gray, 



Syn. Fl. N. Am. I 1 : 173. 1895. 



C. glaber Rydb. Fl. Rocky Mountains, 364. 1917. 



As in the type except for the glabrous or nearly glabrous sepals 

 and pedicels. Of this variety Prof. Jones says: "During the 

 present year (1893) I have seen this occasionally in eastern Ne- 

 vada along with the species. It is quite striking but passes into 

 the type." 



Distribution: southern Utah and eastern Nevada. Type: 

 Jones from "summit near Sink Valley, S. Utah at 7000 ft. alti- 

 tude." 



Specimen examined : 



Utah: "S. Utah," 1877, Palmer 24 (U. S. Nat. Herb.). 



From observation in the field Prof. M. E. Jones says of the 

 species: "The four stamens are declined and closely pressed to 

 the lower petals, and the two others are as tightly pressed to the 

 upper petals." According to the same author this plant grows 

 in "loose soil in alkaline valleys as well as in better drained locali- 

 ties with little alkali." 



9. C. Cooperi (Wats.) Payson, n. comb. 



Thelypodium Cooperi Wats. Proc. Am. Acad. 12: 246. 1877; 

 Coville, Contr. U. S. Nat. Herb. 4: 62. 1893; Robinson in Gray, 

 Syn. Fl. N. Am. I 1 : 174. 1895. 



Guillenia Cooperi Greene, Lean. Bot. Obs. & Crit. 1: 228. 

 1906. 



Annual, glabrous or short and very sparingly pubescent, some- 

 what glaucous: stem slender, flexuous or even serpentine, simple 

 or branched above the base, 2-6 dm. long; the lowermost stem- 

 leaves oblong to oblanceolate, narrowed to a broad petiole, en- 

 tire or sinuate-lobed, obtuse, 2-6 cm. long; other stem-leaves 

 sagittate, mostly entire, acute: sepals usually greenish, nearly 

 equal, 6-7 mm. long, scarcely saccate; petals pale yellow, linear- 



