I9S MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Lithophragma tenella Nutt. : Torr. & Gray, Fl. N. Am. i : 584 ; 

 Tcllima tcncUa Wats. King's Exp. 5 : 95 [Man. R. M. 93 ; 



Bot. Cal. i: 198]. 



A very small plant, scarcely over i dm. high, and with a very 

 small flower. The calyx is turbinate-campanulate, and the petals 

 are wholly free from the ovary and divided into nearly filiform di- 

 visions. A very rare plant. Most specimens referred to it belong to 

 the following : 



Yellowstone Park: 1873, C. C. Farry, loj. 



* Lithophragma glabra Nutt. : Torr. & Gray, Fl. N. Am. i : 584. 



In this species the calyx is rounded-campanulate, nearly twice as 

 large as in the preceding. The petals are also much larger, about 

 as large as in the next, often rose-color and divided into linear lobes. 

 The stem is taller than in the preceding, often over 2 dm. high. 

 The taller specimens of Tellima tenella described by Coulter belong 

 here. L. glabra grows in dry soil, at an altitude of 1000-2000 m. 



Montana: Hell Gate, John Pcarsall, Sii ; Lewis & Claike Co., 

 Mrs.' Fannie Harzvood ; Bozeman, 1892, W. T. S/iazv. 



Yellowstone Park: Soda Butte, 1885, Tzvccdy^ 8^g. 



Lithophragma parviflora (Hook.) Nutt. ; Torr. & Gray, Fl. N. Am. 



i: 584; Tcllima parviflora Hook. Fl. Bor. Am. i: 239 [Man. 



R. M. 93; Bot. Cal. i: 198]. 



In this species the calyx is decidedh' turbinate, and the lower por- 

 tion is united with the ovary. It is rather common in the valleys, 

 at an altitude of 1000-2500 m. 



Montana: Helena, 1892, F. D. Kelscy ; Cedar Mountain, July 

 16, 1897, Rydherg & Bessey, 430 j ; Bridger ]Mts., June 10-14, 4306 

 and 430"/; Park Co., 1889, Tzucedy ; Great Falls, 1891, /t*. S. 

 Williams^ 42; Nuttall ; Bozeman, 1883, Scribncr, 32c; Stinking 

 Water, 1871, Hayden; Grasshopper Valley, 1880, Watson. 



Yellowstone Park : 1888, Z^r. C/ias. H. Hall : 1885, Tzvecdy, 

 830; 1883, Miss 3fary Conipion. 



* Lithophragma Williamsii (D. C. Eaton) Greene, Erythea, 3 : 102 ; 



Heuchcra rr77//V/;;/5// D. C. Eaton, Bot. Gaz. 15: 62 [16: 237]. 



In general appearance this does not resemble the other species. 

 The crenate reniform leaves are not divided and resemble much 

 those of sovao. Hciichcrae. The petals are also undivided and small. 

 The calyx, however, is that of a Lithophragma , resembling mostly 



