MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 20I 



Yellowstone Park: Soda Butte, 1885, Tzueedy, 848; 1884, 

 2jg, in part. 



Parnassia parviflora DC. Prod, i : 320 [Torr. & Gray, Fl. N. Am. 



I : 194; Man. R. M. 95 ; 111. Fl. 2 : 183]. 



In swamps, at an altitude of 1000-2000 m. 



Montana: Manhattan, 1895, Rydbcrg, 268 j ; East Gallatin 

 Swamp, iSg6, Klodman, jj2; Meagher Co., 1892, JS. iV". Bi-ande- 

 gee; Gallatin Co., Mrs. Alder son ; Swimming Women Creek, 1882, 

 Canby ; Sixteen Mile Creek, 1882, Scribner, 5^. 



Idaho : Henry's Lake, July 31, 1897, Rydberg <£• Bessey, 4308. 



HYDRANGEACEAE. 



* Philadelphus Lewisii Pursh, Fl. Am. Sept. 329 [Torr. & Gra}-, Fl. 



N. Am. I : 595 ; Bot. Cal. i : 202]. 



A shrub about one meter high, with large white flowers, and green 

 and glabrate ovate leaves, which are 3-5-nerved from the base. It 

 grows on dry hillsides. The popular name is the same as that of its 

 eastern congeners, viz., " Mock-orange" or " Syringa." Its flower 

 is only a little smaller than that of the P. coronarms of the gar- 

 dens. 



Montana : Soap Gulch, Silver Bow Co., 1888, Tzueedy, 66; Pony, 

 July 6, 1897, Rydberg & Bcssey, 431J ; Western Montana, 1892, 

 Miss Efiima Ware; Belt Mts., 1891, R. S. Williams, 678 ; Gallatin 

 Co., 3frs. Hodguian; Helena, 1894, jS". Douglass; Gallatin Canon, 

 1886, Tweedy, 1161 and 1261 ; Lone Gulch, 1888, 61 ; Jocko River, 

 1883, Canby, 123 and 124; Helena, 1882, Canby; Bitterroot Canon, 

 1880, Watson. 



GROSSULARIACEAE. 



*Ribes setosum Lindl. Trans. Hort. Soc. 7: 243 [111. Fl. 2: 188]. 



A gooseberry characterized by its cylindric calyx-tube, white 

 petals, short stamens and generally numerous bristles on the stems 

 and branches. The berry also is sometimes bristly. On hills, ex- 

 tending up to an altitude of 1500 m. 



Montana: Helena, 1892, Kelsey ; Bozeman, 1892, W. T. Shazv 

 (with more slender corolla, perhaps distinct) ; Great Falls, 1886, 

 R. S. Williams, 3^8; Bozeman, 1883, Scribner, 34/; Big Horn 

 River, 1890, J. W. Blankinship. 



Yellowstone Park: 1873, Parry, 106. 



