702 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



maintained except as a variety. A. inithrhh/Ila is found only at hiuh 

 elevations in the mountains. 



In descril)ino- A. umhi'iiulhi Dr. Rydbero- confused two species, I 

 would hesitate to make this assertion had 1 not examined two cotypes, 

 and Dr. Rydberg has sent me a male and a female head taken from the 

 type sheet. The male and female plants of his tvpe are of different 

 species. One of these he later named ^4. flavescens. and the staminatel 

 plants of this and his A. umhrinella are identical. The name A. 

 iittihrineTId must be applied to the species represented by the female 

 plants of his type, since the species represented In' the male plants was 

 described 1)y me as ^1. rcfr.nt and by Dr. Rydl>erg. as already noted, as 

 A. ^jJarescois. In this connection it may l)e well to call attention to 

 the more salient characters of the male and female plants of the type 

 of the original A. umbrineJJa. The leaves of the staminate {A. reflexa) 

 are spatulate, obtuse or abruptly acute, and with an appressed tomen- 

 tum. The leaves of the pistillate are narrower and mucrouate; the 

 indument lighter and looser, canescent rather than tomentose. A. 

 'umhi'ineUa is quite different in general appearance from A. reflexa 

 and is much more readily separated from it than from ^1. nwdia.^ 



The bracts of the type are much l)roader than in some other speci- 

 mens, such as Flodman's no. 862. which duplicates the type very nicelv 

 as to leaves and habit. 



10. Antennaria pulvinata Greene, Pittonia 3: 287. 1898. 



Pulvinately cespitose. with very short, rosulate-leafv closeh' com- 

 pacted offsets; stems 4-10 cm. high; leaves spatulate-obovate to spatu- 

 late, obtuse or only abruptly acute, about 1 cm. long, white-tomentose 

 on both surfaces; involucres 6-7 mm. high, the bracts (pistillate) either 

 broad and imbricated or narrow and fewer and nearly equal, their tips 

 obtuse or acute, black-green to brown in color. Male plant unknown. 



Tyjye locality. — '^^.Iberta." Collected by John Macoun, nos. 18491, 

 18493, 18495, 18498; type sheets in the herbarium of E. L. Greene. 



Alberta, British Columbia, and Montana (R. S. Williams, no. 729). 



In habit and leaves this is very different from the related A. umlri- 

 nella, A. hiacounii, and ^4. media. In its involucres this species pre- 

 sents a variation which is almost dimorphic. In several other species 

 a variation as to the breadth and length of the involucral bracts may 

 be noticed. Init in none is it as prominent as in this. The form with 

 the broad-bracted and imbricated involucres was mistaken b}^ Dr. 

 Greene for the male plant, while the one with narrow bracts is the 

 '"female plant'" of his description. 



Antennaria pulvinata albescens subsp. nov. 



About 4 cm. high; leaves 5-8 mm. long; involucres about 5 mm. 

 high; bracts (pistillate) imbricated and in about 3 series, rarely neai'ly 

 equal, their tips oval to oblong, ot)tuse. sordid white, pinkish white, or 

 pale l)rown. 



Type locality. — Mount Fops. Salmon River Mountains. Texas dis- 

 trict, Idaho. Collected by Hend<rson. no. 3870; type in the United 

 States National Herbarium. 



Idaho (Henderson. 1895) and Montana (Rvdberg and Bessev. no. 



5162). . ^ . 



I 



