484 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



* Artemisia paucicephala A. Nelson, Bull. Ton-. Bot. Club, 27: 35. 



Somewhat resembling A. gnaphaJodcs^ but more loosel}^ silky- 

 floccose and with few large nodding heads in simple racemes. 



Yellowstone Park : Yellowstone Lake, 1899, A. Nelson, Sj^^. 



On page 432, after Artemisia cana, add : 

 Petasites sagittata (Pursh) Gray ; Brew. & Wats. Bot. Cal. i : 407 

 [Syn. Fl. I-: 376; Man. R. M. 204; 111. Fl. 3: 470] ; Tiissilago 

 sagittata Pursh, Fl. Am. Sept. 332. 

 In wet ground, up to an altitude of about 1000 m. 

 Montana: Columbia Falls, 1893, R. S. Williams. 



On page 442, in the description of Senecio atriapiculatus, instead of 

 the words "Taller and shorter" read "Taller and stouter." 



On page 454, after Taraxacum latilobum, insert: 



* Taraxacum ceratophorum DC. Prod. 7' : 146 ; Taraxacum officinale 



glaucesccns Gray, Syn. Fl. i" : 440, in part. 



Somewhat like T. latilobum, especially in the form of the leaves 

 and the calyculum, but generally much larger, fully as large as T. 

 Taraxacum, but with the inner bracts conspicuously corniculate at 

 the tips. 



Montana: Highwood Creek, 1888, R. S. Williams, ^j^. 



On page 455, before Lactuca pulchella, Insert : 

 *Lactuca Scariola L. Sp. PI. Ed. 2, 1119 [111. Fl. 3: 273 ; Syn. Fl. 

 I-: 442]. 



An introduced weed with spinulose-dentate leaves and small heads. 

 Montana : Missoula, 1899, J. W. Blankinship. 



Before Lygodesmia spinosa, insert : 



* Lactuca multifida. 



Tall, 1-2 m. high, glabrous, somewhat glaucous; leaves deeply 

 pinnatifid, the lobes narroA\iy lanceolate or linear, acuminate, often 

 lobed ; panicle 2-4 dm. long; heads small, numerous, about i cm. 

 high, campanulate ; bracts purplish, glandular-dotted, in about 3 

 series, lanceolate, obtuse ; Howers blue ; achenes brown, ribbed, 

 without a neck, wingless ; pappus tawny. 



Nearest related to L. sulcata, but distinguished bv the narrow 

 leaf-lobes. In damp woods, up to an altitude of 1000 m. 



Montana: Columbia Falls, 1895, R. S. Williams (type). 



Oregon: Columbia River, Scolder, 2^2. 



British Columbia: Sicamous, iS^(^, John Macoun. 



