602 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Heads solitary. 



Plants with slender naked stolons 3. ^. fagellaris. 



Plants without slender stolons. 



Pistillate stems 6 to 10 cm. tall 4. A. latisquama. 



Pistillate stems 2 to 3 cm. tall 5. A. dimorpha. 



Pappus bristles of staminate flowers dilated at tip. 

 Plants not stoloniferous. 



Pistillate heads oblong, the bracts pinkish G. .^4. geyeri. 



Pistillate heads not oblong, the bracts white or brownish. 



Pubescence close, silky-woolly 7. A. luztdoides. 



Pubescence floccose-woolly. 



Stems 5 to 10 cm. high ; alpine plant 8. A. lanata. 



Stems 25 to 60 cm. high; not alpine. 



Tips of the bracts not conspicuously papery.. 9. A. pulcherrima. 

 Tipsof the bracts conspicuously white-papery. 10. A. anaphaloides. 

 Plants stoloniferous, growing in patches. 



Heads loosely racemt)se ; inflorescence glandular \l. A. racemosa. 



Heads corymbose; inflorescence not glandular. 



Leaves 3 to 5 cm. long, oblanceolate or narrowly obovate. 



Green and glabrate al)ove \2. A. boutllii. 



Tomentosc on l)oth surfaces 13. yl. concolor. 



Leaves much smaller and narrower. 



Heads 6 to 8 mm. high; bracts white or pink 20. A. parvifolia. 



Heads 4 to 7 mm. high. 



Involucral bracts tinged with green or brown. 



Suffrutescent at base; bracts yellowish. . 14, A. confinis. 

 Not suflTrutescent ; bracts greenish brown. 

 Leaves densely white-tomentose on 



lx)th sides 15. .4. media. 



Leaves glabrate above, loosely to- 



mentose beneath 16. .4. tomentella. 



Involucral bracts white or pink. 



Leaves obtuse, white-tomentose; bracts 



pink 17. A. concinna. 



Leaves acute, grayish tomentose. 



Heads in %a dense cluster; bracts 



pink 18. .4. rosea. 



Heads in a loose corymb; bracts 

 white 19. .4. hendersoni. 



1. Antennaria stenophylla A. Gray, Proc. Am. Acad. 17: 213. 1882. 

 Aniennaria alpina stenophylla A. Gray in Torr. Bot. Wilkes Exped. 366. 1874. 

 Type locality: "Spipen [Naches] River." Collected by Pickering & Brackenridge. 

 Range: Washington and Oregon. 



Specimens examined: Wenache Mountains, Whiied 1345; Ellensburg, Piper 2708; 

 Whited, April 18, 1898; Pasco, Hindshaw 4, May 25, 1896; Kittitas Mountain, Whiied, 

 May 27, 1896; Spipen River, Wilkes Expedition: Hangman Creek, Sandberg & Leiherg 

 51; Medical Lake, Sandberg <fe Leiherg, May, 1893, Spangle, Piper 3541; Spokane River, 

 Wilkes Expedition. 



Zonal distribution: Arid Transition. 



2. Antennaria leucophaea Piper, Bull. Torr. Club 29: 221. 1902. 

 Type locality Klickitat, Washington. Collected by Howell. 

 Range- Klickitat County, Washington. 



Specimens examined: Klickitat County, Howe//; near Columbus, -5)'«ifc«(i!or/'. 



