224 Vermischte neue Diagnosen. 



and the main stem for some distance below it densely white- woolly: in- 

 volucres of middle size, their pearly scarious bracts all ovate, very acute: 

 flower and fruit not seen. 



British Columbia: Collected in the Chilliwack Valley, 29 July, 

 by Mr. Jas. M. Macoun, no. 26847; also earlier at Revelstoke, no. 11334, 

 and again from the Warm Springs, Kootenay Lake, both in British Co- 

 lumbia, in the year 1890. No. 34053 from Salmon Arm, J. R. Ander- 

 son, 1899, is also the same. 



The species is related to G. decurrens, yet very distinct in habit and 

 inflorescence, the dense white-woolly pubescence of the upper part of 

 stems and branches of the panicle being very peculiar. 



280. Gnaphalium proximum Greene, 1. c, p. 279. 



Annual, erect, rather slender, a foot high, rather amply leafy, even 

 up to the subsessile leafy-bracted clusters of heads; leaves thin, equally 

 hoary on both faces, about l 1 ^ inches long, from ovate-lanceolate to 

 oblong-lanceolate, broadest at the sessile and subcordate-clasping base, 

 somewhat cuspidately acute : small plants simple and with but a terminal 

 cyme; larger ones with many short but strict branches, each with its 

 cyme: bracts of the rather smallish involucres greenish- white, the outer 

 broadly triangular lanceolate and acute, the inner very obtuse: pappus 

 rather scanty, dull-white. 



In moist ground in the vicinity of the Mammoth Hot Springs, Yellow- 

 stonePark, Messrs. A. and E. Nelson, 1899, distributed under no. 6036 for 

 G.Sprengdii, from which the species differs widely in habit, form of foliage, etc. 



281. Arnica laevigata Greene, 1. c, p. 279. 



Near A. latifdia and as large, the herbage of a deeper green and of 

 much more thin and delicate texture; radical leaves from round-ovate 

 and cordate to lance-ovate and subcordate, 2 to 3 inches long, on slender 

 petioles as long, the 2 or 3 cauline pairs broad and sessile, glabrous on 

 both faces and coarsely, incisely, often doubly serrate-toothed, the larger 

 3 inches long and more than 2 in breadth: peduncles about 3, slender, 

 puberulent under their narrowly turbinate involucres, the bracts of these 

 uniserial, lanceolate, acuminate, scarcely pubescent except as to the 

 villous-ciliolate margins; rays light-yellow, long and narrow; disk-corollas 

 narrow-funnelform, the very short and hirtellous tube passing gradually into 

 the limb, which much exceeds it in length: pappus white; achenes glabrous. 



British Columbia: By springs in woods of the Chilliwack Valley, 

 5 Aug., 1901, J. M. Macoun, no. 26926. 



However much like A. latifdia in general habit and leaf-outline this 

 may be, it must needs be distinguished specifically by its total lack of 

 pubescence, thin texture, narrow involucres, funnelform corollas, etc. In 

 true A. latifdia 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 1901 on Mt. Cheam by Mr. 

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



