608 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



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

 Psilocnrphus oreganus elatior A. Gray, Bot. Ciil. 1: 33(3. 1876. 

 Type locality: Portland, Oregon. 



Range: Washington, Oregon, and Idaho. 



.Specimens examined; Seattle, Piper 112.5; west Klickitat County, Siihsdoif 1573; 

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

 Coulee City, Piper 3904; Vancouver, Piper 5024. 



Zonal distribution: Transition. 



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



Tyi'E l<x'ality; "Plains of the Oregon River, in inundated tracts." Collected by 

 Nuttall. 



Range: Washington to California. 



Specimens examined: Coulee City, Piper 3904|. 



Zonal distribution: Arid Transition. 



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

 Type locality: Santa Barl)ara, California. 



Range: British Columbia to California. 



Specimens examined: Fairhaven, Sulsdotf, -July 15, 1890. 



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



Type locality-: "Near the Oregon and outlet of the Wahlamet" Collected l)y Nuttall. 



Range: Oregon, Washington, and Idaho. 



Specimens examined: Klickitat County, Sulsdorf .32; Howell 284; Spokane County, 

 Sulcsdorf 932, 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 type locality, as the 

 only .species found in recent yeai-s near the mouth of the Willamette is P. elatior Gray. 



CENTAXJREA. 



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; raj's red, blue, white, or violet; pappus present 2 C. cyanus 



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



1. Centaurea melitensis L Sp PI. 2: 917. 17.53. 

 Type locality: "IiiMelita." 



Specimens examined: Wliidby Island, Gardner 161; Port Townsend, Edwards in 1890; 

 Seattle, Piper, September, 1898. 



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

 Type locality: Europe. 



Specimens examined: Wenach'^, Whited 1270. 



3. Centaurea consimilis Boreau, Fl. Centr. Fr. ed. 3. 2: 351. 18.57. 

 Type locality: Angers, France. 



Specimens examined: Pullman, Hardvyich 2390. 



CNICUS. 



1. Cnicus benedictus L. Sp. PI. 2: 826. 17.53. Blessed thistle. 



Centeiurea henedicta L. Sp. PI. ed. 2. 2; 1296 1763. 

 Tyte locality: "In Chio, Lemus, Hispania." 

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



