MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 447 



In high mountains, at an altitude of 2500-3000 m. 



Montana: Park Co., 1887, Tiveedy, j^j, in part; Silver Bow 

 Co., M?s. Jennie Moore; Jack Creek, Jul}^ 14, 1897, Rydberg & 

 Bessey, 1^266. 



Idaho : Mt. Chauvet, July 29, Rydberg & Bessey, 526y. 



Senecio subnudus DC. Prod. 6 : 428 ; Senecio aureus stibnudus 



Gray, Syn. Fl. i== : 391 [Man. R. M. 211]. 



In swampy places on mountain-tops, at an altitude of 2500-3000 m. 



Montana: Park Co., 1887, Tzveedy, J44.; Pony, July 7, 1897, 

 Rydberg & Bessey, 52J0. 



Yellowstone Park : 1884, Tweedy, 120. 



* Senecio alpicola. 



Less than 5 cm. high, glabrate or slightly tomentose when young ; 

 basal leaves 1-3 cm. long, thick, elliptic, with a slightly winged 

 petiole, entire, or rarely sinuately 3-toothed at the end ; stem-leaves 

 reduced to small bracts on the short-scapose mostly monocephalous 

 stems; heads about i cm. high; bracts linear-lanceolate, green or 

 slightlv purplish, almost equalling the disk ; rays lemon-yellow, 

 about 8 mm. long. 



The plant strikingly resembles S. fctrophiUis Greene {S. petraeus 

 Gray) of Colorado, and grows in similar situations, but it is some- 

 what smaller, has almost entire leaves, and lemon- (not orange-) col- 

 ored rays. It grows among rocks together with S. occidentalis, at 

 an altitude of 3000 m. 



Montana: Cedar Mountain, July 16, 1897, Rydberg d: Bessey, 

 ^26g; East Boulder Plateau, 1887, Tzveedy, j^j, mainly. 



* Senecio resedifolius Lessing, Linnaea, 6: 243 [Syn. Fl. i^ : 390]. 



A low species of somewhat the habit of the preceding ; first basal 

 leaves rounded, crenate, often cordate at the base, the others, as well 

 as the lower stem-leaves, lyrately lobed, crenate ; head turbinate, 

 slightly bracteolate ; bracts narrowly linear: rays about i cm. long. 

 *S'. resedifolius has been regarded as a strictly arctic plant, but the 

 following specimens can not be distinguished from those from Alaska 

 and the arctic coast. It grows in Montana, at an altitude of 2000- 

 3000 m. 



Montana: Upper Marias Pass and McDonald's Peak, 1883, 

 Canby, 204.. 

 Senecio eremophilus Richardson, Frankl. Journ. Ed. 2, App. 31 



[Syn. Fl. i^: 393]- 



