3^ The Ottawa Naturalist. |May 



cauline linear, acute or accuminate, erect ; cymes neither dense 

 nor lax, of 8 or lo heads of middle size ; involucre rather strongly 

 woolly at base, each bract marked with a brown spot at base of 

 the long and conspicuous scarious but faintly pinkish tip, only the 

 innermost tips acutish, the others obtuse, all apt to be a little 

 incised. 



A rather neat and elegant firmly erect species, obtained by 

 Mr. H. B. Sanson on the slopes of Sulphur Mountain, near Banff, 

 B.C., i6th July, 1901. It is somewhat related to A. actifntna^a, 

 although distinct enough by its compact habit, and permanently 

 silvery foliage. Even the dead leaves of a former year are not 

 divested of their indument. The type is the Geol. Survey No. 

 26,857. 



A. chlorantha. Low, rather loosely tufted, 3 to 5 inches 

 high, the short stolons not densely leafy, and leaves large for one 

 of the A. alpina group, the largest about an inch long, cuneate- 

 obovate to obovate-spatulate, acutish and miicronulate, white 

 with a rather loose and flocculent (not compact and silvery) in- 

 dument, this deciduous, the leaves of the former year quite glab- 

 rous and of a light green ; those of the stem about 4, an inch 

 long, oblong-linear, acute, suberect, less woolly : cyme capitate, 

 the subsessile heads about 5 ; bracts of the involucre with long 

 deep-green scarious tips elongated and mostly acute, the inner- 

 most acuminate. 



Chillivvack Valley, B.C., at 6,500 feet, by Mr. J. M. Macoun, 

 23 July, igor, being No. 26,197 of the Survey ; also apparently 

 the same under No. 26,196, from an altitude of 5,600 feet. All 

 the specimens are too young, and show only the pistillate state, 

 unfortunately; but the species is well marked as to habit, foliage 

 and pubescence. 



A. LANULOSA. Habitally resembling A. c/i/onin/hii, taller, 

 more slender, the stolons rather rigid, sparsely leafy, the leaves 

 smaller, more abruptly narrowed from below the obovate summit, 

 of thinner texture, loosely white-woolly, those o'i the preceding 

 year glabrous but brown and dead ; cauline linear, acuminate : 



