NEW SPECIES OF CHAENACTIS. 223 



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nute and round, the whole leaf floccose-tomentose when young, 



later more or less glabrate : scapes only % inch long, the 

 heads as high ; involucral bracts broad and obtuse, thinly 

 wooly, with barely, or hardly, a trace of glandulosity ; corol- 

 las deep purple, as are also stems, leaves, and even the pap- 

 pus ; achenes quite hirsute, scales of pappus unequal, on the 

 whole rather short, very obtuse. 



A fine subalpine species known only as collected by Dr. 

 J. N. Rose somewhere in northwestern Wyoming, probably 

 on what is now Yellowstone Park territory, 31 Aug., 1893. 



Chaenactis minuscula. Dwarf, and also slender, the 

 tufts of small leaves only an inch high, the scapiform ped- 

 uncles and solitary heads together barely 2 inches, even less, 

 all these, in the specimens, crowning stoutish caudex-branches 

 dark-colored and covered with the persistent bases of the 

 leaves of other seasons, the root bearing these not known : 

 leaves from broadly lanceolate to narrowly oblong outline, 

 the pinnae approximate and mostly entire, the whole floccose- 

 tomentose only when young, the older glabrate : involucres 

 % inch high, their bracts green or purplish, glandular-sca- 

 brous or some glandular-hirtellous, yet not very viscid : 

 achenes rather strongly bristly-hairy ; pappus purple, its 

 scales obtuse, not very unequal. 



Summit of Mount Parks, Idaho, at an altitude of 9400 to 

 10,400 feet, collected by Dr. B. W. Evermann. 15 Aug., 

 1895. 



Chaenactis angustifolia. Low perennial, with caudex 

 simple or sparingly branched, the leafy and corymbose stems 

 only 2 to 7 inches high, all the parts except the involucre and 

 flowers white with a close permanent tomentum, both basal 

 and cauline leaves long and narrow, in outline narrowly lan- 

 ceolate to broadly linear, the pinnae closely approximate and 

 very short, either with 3 rounded short lobes or else quite 

 entire, the petiole manifest, but much shorter than the blade : 



