602 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Heads solitary. 



Plants with slender naked stolons 3. A. jlagellaris. 



Plants without slender stolons. 



Pistillate stems 6 to 10 em. tall A. A. latisquama. 



Pistillate stems 2 to 3 em. tall b. A. dimorpha. 



Pappus bristles of staminate flowers dilated at tip. 

 Plants not stoloniferous. 



Pistillate heads oblong, the braets pinkish (i. .4. qeyen. 



Pistillate heads not oblong, the bracts white or brownish. 



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



Pubescence floccose-woolly. 



Stems 5 to 10 cm. high; alpine plant 8. ^4. Janata. 



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. ^4. anapfialoides. 

 Plants stoloniferous, growing in patches. 



Heads loosely racemose: inflorescence glandular 1 1. ^4. lacemosa. 



Heads corymbose; inflorescence not glandular. 



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



Green and glabrate above 12. .4. lioweUii. 



Tomentose on both surfaces 13. .4. concolor. 



Leaves much smaller and narrower. 



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



Heads 4 to 7 mm. high. 



Involucral bracts tinged with green or brown. 



SuflYutescent at base; bracts yellowish.. 14. A. confinis. 

 Not sufl^rutescent ; bracts greenish brown. 

 Leaves densely white-tomentose on 



both sides 15. ^4. media. 



Leaves glabrate above, loosely to- 

 mentose beneath 16. ^4. loinenleUa. 



Involucral bracts white or pink. 



Leaves obtuse, white-tomento.se; bracts 



pink 17. A. concinna. 



Leaves acute, grayish tomentose. 



Heads in a dense cluster; bracts 



pink 18. ^. ro.9ea. 



Heads in a loose corymb; bracts 



white 19. ^4. Iiendersoni. 



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

 Antennaria 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, Whited 1345; Ellensburg, Piper 2708: 

 Whited, April 18, 1898; Pa.sco, Hind.^haw 4, May 25, 1896; Kittitas Mountain, Whited, 

 May 27, 1896: Spipen River, Wilke.^ Expedthon: Hangman Creek, Sandherg & Leihery 

 51; Medical Lake, Sandhery d' Leibery, May, 1893, Spangle, Piper 3541; Spokane River, 

 Wilke.'! Expedition. 



Zonal distribiition; Arid Transition. 



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

 Type locality Klickitat, Washington. Collected by Howell. 

 Range- Klickitat County. Washington 



Specimens e.xamined: Klickitat County, //o;/;e//; near Co\uui\m>i, Suksdorf. 



