1902] Greene — Some New Northwestern Composit^e. 281 



Arnica aurantiaca, Greene, Torreya i, 42, founded on a 

 plant of Oreg-on collected only by Mr. Cusick until now, must be 

 credited to British Columbia, Mr. Macoun's No. 26,934 from the 

 Chilliwack region matching- perfectly the originals of the species. 



Arnica confinis. Less than a foot high, monocephalous, or 

 else with also a pair of monocephalous peduncles from the axils of 

 the uppermost pair of leaves, these surpassing- the terminal one ; 

 herbage of a light green, viscid-puberulent as to the foliage, the 

 stem with a sparse hairiness : lowest leaves obovate to oblanceo- 

 late, an inch long or more and petiolate, the cauline in about three 

 pairs, ovate to lanceolate, ,1 to 2 inches long, callous-denticulate, 

 or serrate-dentate, or even subentire, acutish : heads of middle 

 size, the involucral bracts biserial, acuminate, sparsely hirsute : 

 rays deep-yellow, not large ; disk-corollas with hirsute tube and 

 naked limb about equal ; achenea with a few hirsute hairs ; 

 pappus tawny, subplumose. 



Chilliwack Valley, B.C., Mr. Macoun, No. 26,933. ^^ characters 

 of pubescence, flower and fruit this approaches A. ova/a, Greene, 

 but in foliage and habit it differs widely. 



Arnija aspera. Stems clustered, often 2 feet high, equably 

 leafy to the corymbose summit, loosely hirsute, more strongly and 

 quite retrorsely so toward the base : leaves about 2 inches long-, 

 ovate-lanceolate, sessile by a broad base, the upper longer, the 

 lower shorter than the internodes, rough-hairy on both faces, 

 saliently callous dentate : peduncles several, slender ; involucres 

 small for the plant, campanulate, their bracts uniserial, hispidulous 

 with pustulate hairs ; rays very obtuse and only minutely triden- 

 tate ; disk-coroUas with very short tube and rather longer limb 

 about equally and very sparsely setose-hairy : achenes setose- 

 hairy; pappus tawny, subplumose. 



The type of this species is a plant found by myself on Mt. 

 Rainier, 19 Aug., 1889, and then supposed to he A. amplexicaulisy 

 which I have now for some time known to be a very different 

 plant. A. aspera has also been collected by Mr. Piper at 

 Snoqualmie Falls, Washington, and again in the Olympic Moun- 

 tains. Mr. M, W. Gorman obtained it in 1897 among his plants 

 of the Washington Forest Reserve. 



