558 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



3. Chrysopsis hispida (Hook.) Nutt.; DC. Prod. 7: 279. 1839. 



Diplopappus hispidus Hook. Fl. Bor. Am. 2: 22. 1834. 



OJirysopsis hirsuta Greene, Pittonia 3: 296. 1898. 



Type LOCALm': "Carlton-House Fort." 



Range: Washington to Sa.skatchewan, south to Texas and Arizona. 



Specimens examined: Loon Lake, Winston, July 20, 1897; Spokane, Piper 2385; 

 Granddalles, Cotton 1550. 



Zonal distkibution : Arid Transition and Upper Sonoran. 



CHRYSOTHAMNTJS. Rabuit bkush. 



Bracts of the involucre attenuate, acute 4. C bloomeri. 



Bracts of the involucre obtuse or ohtusish. 

 Stems glabrous. 



Heads few ; plant 15 to 30 cm. high 1 . f . pumilv^. 



Heads numerous; plant .5 to 2 m. high 2. C. rinctdifloniit , 



Stems more or less pubescent 3. 6'. iMVUstosuis. 



1. Chrysothamnus pumilus Nutt. Traas. Am. Phil. Soc. 7: 323. 1840. 

 Bigdovia doxiglnsii pumila A. Gray, Syn. Fl. 1'^: 140. 1884. 



Ti'PE i>ocality: "On the border of Lewis River and the Rocky Mountain plains." Col- 

 lected by Nuttall. 



Range: Washington and Montana to Utah. 



Specimens examined: Yakima region, Brandegee in 1882. 



2. Chrysothamnus viscidiflorus (Hook.) Nutt. Trans. Am. Phil. Soc. 7: 324. 1840. 

 Crinitaria viscidijlora Hook. Fl. Bor. Am. 2: 24. 1834. 



Bigdovia viscidijlora DC. Prod. 7: 279. 1838. 



Bigdovia douglasii A. Gray, Proc. Am. Acad. 8: 645. 1873. 



Type ux^ality: "On the barren plains of the Columbia from the Great Falls to the 

 ir.ountains, and along Salmon River." Collected by Douglas. 



Range: British Columbia to Dakota, .south to California and New Mexico. 



Specimens examined: Tampico, Henderson, July 31, 1892; Ellensburg, Whited 855; 

 North Yakima, Henderson, October 5, 1892; Wenache, Whited 1328; Rattlesnake Moun- 

 tains, Cotton 481; Egbert Springs, Samlherg <fe Leiberg 382; Chelan, Elmer 852; Coulee 

 City, Lake <& Hull 732; without locality Vasey 509; mouth of Snake River, Cooper. 



Zonal distribution: Upper Sonoran. 



2a. Chrysothamnus viscidiflorus lanceolatus (Nutt.) Greene, Erythea 3: 95. 1895. 



Chrysothamnus lanceolatus Nutt. Trans. Am. Phil. Soc. 7: 324. 1840. 



Bigelovia douglasii lanceolata A. Gray, Syn. Fl. 1-: 140. 1884. 



Type locality: "Toward the source of the Platte and on the banks of Lewis River." 

 Collected by Nuttall. 



Range: Washington to Montana and Wyoming. " 



Specimens examined: Tampico, Flett 1026. 



Zonal distribution: Upper Sonoran. 



3. Chrysothamnus nauseosus (Pall.) Britton in Britt. & Br. III. Fl. 3: 326. 1898. 

 Chrysocoma nauseosa Pall.; Pursh, Fl. 2: 517. 1814. 



Chrysothamnus speciosus albicaulis Nutt. Trans. Am. Phil. Soc. 7: 324. 1840. 



Bigelovia graveolens albicaulis A. Gray, Proc. Am. Acad. 8: 645. 1873. 



Type locality: "On the banks of the Mis.souri." 



Range: Washington to Alberta, south to California and Wyoming. 



Specimens examined: Yakima Region, Cooper; Ellensburg, Whited 8.56; Umtanum 

 Creek, Co«on 895; Prosser, Cotton 897 ; BlueMountains, i/orn«r 327; Wawawai, Piper 1571; 

 Quillamene Creek, Cotton 1790. 



Zonal distribution: Upper Sonoran. 



