MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. IO7 



Montolivaea Unalaschensis (Spreng.) ; Spiranthes Unalaschensis 



Spreng. Syst. 3 : 708 : Hahcnaria Unalaschensis Wats. Proc. 



Am. Acad. 12: 277 [Man. R. M. 342; Bot. Cal. 2: 133]. 



Common in woods in the mountain regions, at an altitude of 1500 

 —2500 m. 



Montana: Jack Creek Cafion, July 15, 1897, Rydberg & Bessey ^ 



388g; Bridger Mts., i^6, Fhdnian, jjS ; Tiger Butte, 1886, 7?. S. 



Williams, 321; Sixteen Mile Creek, 1883, Scribner, 264.; Jocko 



River, 1883, Canby, 3081 Mission Range, 1883, Canby, jo8; 



Missoula, 1880, Watson; Loto Creek, 1880, Watson. 



Yellowstone Park: Lone Star Geyser Basin, Aug. 7, 1897, 

 Rydberg & Bcssey, 3goi ; Mammoth Hot Springs, 1884, Tzveedy, 

 10. 

 Epipactis gigantea Dougl. ; Hook. Fl. Bor. Am. 2: 220 [Man. R. 



M. 343; Bot. Cal. 2: 137]. 



Along streams, up to an altitude of about 1500 m. 



Montana: Sun River Canon, 1887, R. S. Williams, 623. 



Gyrostachys stricta ; Spiranthes Romanzoffiana Gray, Man. Ed. 5, 

 504 [Bot. Cal. 2 : 135 ; Man. R. M. 343] ; not Chamisso.; Gyro- 

 stachys Romanzoffiana MacM. Met. Minn. 171 [111. Fl. i: 470]. 

 The Alaskan G. Romanzoffiana has a very short spike, 1-2 cm. 

 long, upper portion of the scape densely glandular, and the acuminate 

 sepals united to near the apex. The Rocky Mountain plant differs 

 slightly from that of Canada and the northeastern United States in 

 being generally somewhat lower, 1-2 dm. high, with shorter spikes 

 and broader basal leaves. 



In damp woods, especially among rocks, up to an altitude of 1500 

 —2500 m. 



Montana: Indian Creek, July 22, 1897, Rydberg & Bessey, 

 Sgio; Forks of Madison, July 26, 3(^08; Elk Mts., 1896, Flodman, 

 363; Tiger Butte, 1886, 7?. S. Williams, 320; Little Belt Mts., 

 1883, Scribner, 268. 



Yellowstone Park: Upper Geyser Basin, August 19, 1892, 

 Isabel Mulford; 1884, Tzveedy ; Mud Springs, 187 1, Hay den; 1873, 

 C. C. Parry, 268. 



Listera convallarioides (Sw.) Torr. Comp. 320 [Man. R. M. 343; 

 111. Fl. I : 473 ; Bot. Cal. 2 : 136] ; Epipactis convallarioides Sw. 

 Kongl. Vet. Akad. Handl. (II.) 21: 232. 

 In damp cold woods, up to an altitude of 2000-3000 m. 



