MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 43 1 



Montana: Parle Co., 1887, Tzueedy, jog; Yogo,id>(^6, I^lodman, 

 S8j ; Sweet Grass Canon, 886; Emigrant Gulch, Aug. 23, 1897, 

 Rydberg & Bcssey, -^206; Indian Creek, July 21, 520^ ; Missoula, 

 1898, Williams & Griffith. 



Yellowstone Park : Indian Creek, 1884, Tzvccdy, 186. 



Artemisia discolor Dougl. ; DC. Prod. 7: 109 [Syn. Fl. i-: 373; 



Man. R. M. 202 ; Bot. Cal. i : 404] . 



Fairly common on the higher peaks, at an altitude of 2500- 

 3000 m. 



Montana: Park Co., 1887, Tzveedy, j6o; Haystack Peak, 1887, 

 jio; Sun River Canon, 1887, R. S. Williams, yog; Little Belt 

 Mountains, 1896, Flodman, 88 j and 88^; Cedar Mountain, July 16, 

 1897, Rydberg d- Bessey, j2o8 ; Electric Peak, Aug. 18, J^op and 

 ^210 (the latter number with larger nodding heads ; may be a hybrid 

 with scopTilortan) ; Woodruff's Falls, 1883, Canby, ig6. 



* Artemisia graveolens Rydb. Bull. Torr. Bot. Club, 24: 296. 



Similar to A. discolor, but glabrous, except occasionally slightly 

 grayish puberulent on the lower surface of the leaves ; whole plant 

 heavy-scented and covered with glutinous dots. On mountains, at 

 an altitude of 2500 m. 



Montana: Long Baldy, Little Belt Mountains, 1896, Flodman, 

 881, 



* Artemisia tenuis. 



Stem very slender, glabrous or minutely puberulent, branched and 

 leafy; leaves about 2 cm. long, green above, slightly white-tomentu- 

 lose beneath, deeply divided into 5-7 linear acute divergent seg- 

 ments ; inflorescence with slender raceme-like branches ; heads on 

 very slender but short pedicels, subtended by a bract-like linear-lan- 

 ceolate leaf, erect, about 4 mm. high, the bracts brownish, minutely 

 puberulent, ovate, not at all tomentose, and with a scarious erose 

 margin ; corolla brown. 



A near relative of A. Lindleyana, from which it differs in the 

 taller very slender stem, a much scantier pubescence, the slender 

 raceme-like branches of the inflorescence, and the smaller erect brown 

 heads. It fits the description of A. Prcscottiana, except that the seg- 

 ments of the leaves are not filiform. It was found growing in sandy 

 soil in a canon, at an aldtude of about 1500 m. 



Montana : Emigrant Gulch, August 23, 1897, Rydberg & Bessey, 

 ,5201. 



