272 MEMOIRS OF THE XEW YORK BOTANICAL GARDEN. 



Mentzelia albicaulis (Hook.) Dougl. ; Hook. Fl. Bor. Am. i : 222^ 



as synonym [Man. R. M. 107 : 111. Fl. 2 : 459 ; Bot. Cal. i : 235] ; 



Bart on ia albicaulis Hook. Fl. 1. c. 



Hillsides, up to an altitude of 2500 m. 



Montana: Beaver Head Co., 1887, Tzcccdy, 134; Jefferson 

 River, 1883, Scrihncr, 60a. 



Mentzelia decapetala (Pursh) Urb. & Gilg. in Engler & Prantl, 

 Nat. Pfi. Fam. 3: Abt. 6a, iii [111. Fl. 2: 459] ; Bartonia dcca- 

 ■petala Pursh; Sims. Bot. Mag. pi. i^Sj: jSfentzelia ornata 

 Torr. & Gray, Fl. N. Am. i : 534 [Man. R. M. 107]. 

 In cafions and sand-draws, throughout the plain regions, up to an 

 altitude of about 2000 m. 



Montana: Emigrant Gulch, Aug. 23, 1897, Rydberg & Bcssey, 

 4-54-5; East Montana, 1884, Tzvccdy ; Ruby River, 1887, 150; Sil- 

 ver Bow Co., 1888, 155; Great Falls, 1885, F. IV. Andnson, 161 ; 

 Deer Lodge Co., Miss Emma Ware; Cinnabar, 1886, P. Koc/i, 

 1 1 01; Great Falls, 1891, JR. S. Williams, 54; Head of Missouri, 

 1882, Canby ; Rock Creek, 1883, Scribner, 60. 



Mentzelia laevicaulis (Dougl.) Torr. & Gray, Fl. X. Am. i: 535 

 [Man. R. M. 107 ; 111. Fl. 2 : 459; Bot. Cal. i : 237] ; Bartonia 

 laevicaulis Dougl. ; Hook. Fl. Bor. Am. i : 221. 

 In canons and on hillsides, up to an altitude of 2500 m. 

 Montana: Garrison, 1895, Rydberg, 2y3j; Emigrant Gulch, 

 1897, Rydberg d- Bessey, 4546; Gallatin Co., Mrs. Alder so n : Liv- 

 ingstone, 1887, Tweedy, 148; Ruby River, i4g; Silver Bow Co., 

 1888, Tzveedy, 136; Box Elder Creek, 1887, R. S. Williams, 727; 

 Helena, 1887, 686; Elk Creek, 1883, Scribner, jp; Billings, 1898, 

 Williams & Griffith. 

 Yellowstone Park: Hot Sulphur Springs, 187 1, Hayden. 



CACTACEAE. 



Cactus Missouriensis (Sweet) Kuntze, Rev. Gen. PI. 259 [Coult. 

 Contr. U. S. Xat. Herb. 3: 110; 111. Fl. 2: 462]; Mamillaria 

 Missouriensis Sweet, Hort. Brit. 171 [Man. R. M. 109]. 

 Dry prairies and plains, up to an altitude of over 2000 m. 

 Yellowstone Park: Tweedy, 423 (according to Coulter). 



* Cactus Notesteinii (Britton) ; Mamillaria Notesteinii Britton, Bull. 

 Torr. Bot. Club, 18: 367. 



