MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 4II 



*Antennaria umbrinella Rydb. Bull. Torr. Bot. Club, 24: 302. 



Differs from the preceding in the oblong obtuse umber to isabel- 

 colored bracts of the fertile heads. It grows on the tops of the higher 

 mountains, at an altitude of 2500-3000 m. 



Montana: Bridger Mts., June 18, 1897, Rydberg & Bcssey, 

 5162; Old Hollovvtop, Pony, July 9, ji6j ; Long Baldy, Little Belt 

 Mts., 1896, Flodman, Sj^; Spanish Peaks, 860. 



Yellowstone Park : 1885, Tzveedy^ yzd. 



Idaho: Mt. Chauvet, July 29, 1897, Rydberg & Bcssey, J164. 



*Antennaria flavescens. 



Surculose-proliferous, almost cespitose ; leaves of the stolons 

 broadly spatulate, about i cm. long, acute, very densely tomentose 

 on both sides with rather appressed tine yellowish tomentum ; flower- 

 ing stems about i dm. high, very slender; stem-leaves oblong to 

 linear, small, erect; heads about half a dozen in a small subcapitate 

 cluster, 4—5 mm. high and 5 mm. in diameter; involucre campanu- 

 late, densely tomentose at the base, its bracts in about 3 series, 

 the papery portion isabel-color, in the sterile head rotund or broadly 

 elliptic, in the fertile narrowly oblong, the outer obtuse, the inner 

 acute ; staminate pappus pure white with very broad tips, the pistillate 

 duller, filiform. 



Nearest related to A. refexa A. Nelson, but differs in the lighter 

 colored bracts which are much smaller, as is best shown in the 

 staminate plant. It is also closely related to A. umb7-ineUa, but has 

 larger basal leaves and smaller stem leaves, much lighter colored 

 involucral bracts, which in the pistillate plant are narrower and more 

 acute, and a more appressed, glossier, yellowish tomentum. From 

 A. microfhylla it differs in the lower habit, the color of the tomen- 

 tum and of the bracts, and the subcapitate inflorescence. It grows 

 on very dry hillsides, at an altitude of about 2000 m. 



Montana : Bridger Mountains, June 11, 1897, Rydberg & Bcssey y 

 5/^5 (type); Spanish Basin, June 26, j/^d; June 23,5/55. The 

 last number is represented by somewhat taller specimens, with more 

 open inflorescence, longer heads and loosely floccose stem ; they 

 approach A. inicroj)hyUa. 



Idaho: Beaver Canon, 1895, Rydberg, 286g. 



Yellowstone Park : Indian Creek, 1884, Tzveedy, lyj in part. 



*Antennaria parvifolia Nutt. Trans. Am. Phil. Soc. (II.) 7: 406 

 [Rydb. Bull. Torr. Bot. Club, 24: 301] ; Antennaria dioica 



