28o The Ottawa Naturalist. [March 



By springs in woods of the Chilliwack Valley, B.C., 5 Aug., 

 igoi, J. M. Macoun, No. 26,926. However much like A. latijolia 

 in general habit and leat-outline this may be, it must needs be dis- 

 tinguished specifically by its total lack oi pubescence, thin texture, 

 narrow involucres, funnelform corollas, etc. In true A. latifolia 

 the bracts are glandular-hairy throughout, and not at all ciliate ; 

 and its disk-corollas are much larger and not funnelform, the throat 

 and limb swelling out abruptly from the short tube. Mr. Macoun 

 writes that this species was collected in iqoi on Mt. Cheam by 

 Mr. J. R. Anderson and Dr. Jas. Fletcher. 



Arnica aprica. Also akin to A. latifolia and like it com- 

 monly more or less pubescent, but the hairs less rigid, and 

 obviously jointed ; the whole plant much smaller in all its parts, 

 and the heads more numerous : radical leaves long-petioled and 

 broadly or narrowly cordate-ovate, the cauline oval, sessile, all 

 serrate or dentate, the teeth callous-tipped : bracts of turbinate 

 involucre few, thin, oblanceolate, acute or acuminate, often purple- 

 tipped, nearly glabrous : rays few, rather deep-yellow, not deeply 

 toothed, the teeth short and broad : disk-corollas with slender 

 tube about as long as the subcylindric but abrupt limb : pappus 

 firm, wihite ; achenes long and slender, glabrous except a few 

 obscure bristly very short hairs and as few minute glands about 

 the summit. 



This is represented by Mr. James Macoun's numbers 26,284 

 and 26,285 from the Chilliwack Valley. It is said to be a plant 

 not of the woods, but of open ground along streamlets. It is 

 readily distinguishable from A. latifolia not only by its smaller 

 size and more numerous flowers, but by the character of its 

 pubescence, and especially by its short merely tridentate rays ; 

 these last, in the real A. latifolia^ being elongated, and very 

 deeply cut at summit into narrow almost ligulate teeth or seg- 

 ments. 



Arnica Macounii, Greene, Pitt, iv., 160. This species, 

 hitherto known to me only from Vancouver Island, was copiously 

 collected by Mr. James Macoun in the Chilliwack Valley, last 

 season, the specimens bearing the numbers 26,927, 26,928 and 

 26,929 of the Geol. Surv. Herb. 



