608 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



1. Psilocarphus elatior A. Gray, Syn. Fl. ed. 2. 1^: 448. 1886. 

 Psitocarphus oregamts elatior A. Gray, Bot. Cal. 1: 336. 1876. 

 Type locality: Portland, Oregon. 



Range: Washington, Oregon, and Idaho. 



Specimens examined: Seattle, Piper 1125; west Klickitat County, Suksdotf 1573; 

 Manor, Piper 3079; Pullman, Piper, September 30, 1897; Blue Mountains, Homer 336; 

 Coulee City, Piper 3904; Vancouver, Piper 5024. 



Zonal distribution: Transition. 



2. Psilocarphus brevissimus Nutt. Trans. Am. Phil. Soc. 7: 340. 1840. 



Type locality: "Plains of the Oregon River, in inundated tracts." Collected by 

 Nuttall. 



Ranoe: Washington to California. 



Specimens examined: Coulee City, Piper 3904J. 



Zonal distribution : Arid Transition. 



3. Psilocarphus tenellus Nutt. Trans. Am. Phil. Soc. 7: 34l. 1840. 

 Type uxality: Santa Bart)ara, CaliforiiiH. 



Range: British Columbia to California. 



Specimens examined: Fairhaven, Suksdorf, July 15, 1890. 



4. Psilocarphus oreganus Nutt. Trans. Am. Phil. Soc 7: 341. 1840. 



Type LOCALiri: " Near the Oregon and outlet of the Wahlamet " Collected by Nuttall. 



Range: Oregon, Wa.shingt*)n, and Idaho. 



Specimens examined: Klickitat County, Suksdorf 32; Hotvell 284; Spokane County, 

 Suksdorf 9^2, 931 ; Coulee City, Piper. 



Nuttall's type in the Gray Herbarium agrees with his description and is the plant under- 

 stood by Dr. Gray. There is evidently some error in regard to the typo locality, as the 

 only species found in recent years near the mouth of the Willamette is P. elatior Gray. 



CENTAUREA. 



Bracts of the involucre each tipped with a slender spine; rays yellow; 



pappus of unequal bristles 1. C. melitensis. 



Bracts of the involucre spineless, all more or less fimbriate. 



Annual; rays red, blue, white, or violet; pappus present 2 C.ajanus 



Perennial ; rays red ; pappus none 3. C. consimilis. 



1. Centaurea melitensis L Sp PI. 2: 917. 1753. 

 Type ixxjality: "InMelita." 



Specimens examined; Whidby Island, Gardner 161; Port Townsend, Edvxirds in 1896; 

 Seattle, Piper, September, 1898. 



2. Centaurea cyanus L. Sp. PI. 2: 911. 1753. Corn flower. 

 Type locality: Europe. 



Specimens examined: Wcnach'^, Whited 1270. 



3. Centaurea consimilis Boreau, Fl. Centr. Fr. ed. 3. 2: 351. 1857. 

 Type locality: Angers, France. 



Specimens examined: Pullman, Hardmck 2390. 



CNICUS. 



1. Cnicus benedictiis L. Sp. PI. 2: 826. 1753. Blessed thistle. 



Centaurea benedicta L. Sp. PI. ed. 2. 2: 1296 1763. 

 Type locality: "Iq Chio, Lemus, Hispania." 

 Specimens examined: Waitsburg, Horner 166; Colfax, Piper, June 28, 1901. 



