608 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
1. Psilocarphus elatior A. Gray, Syn. Fl. ed. 2. 1°: 448. 1886. 
Psilocarphus oreganus elatior A. Gray, Bot. Cal. 1: 336. 1876. 
Type LocaLity: Portland, Oregon. 
Rance: Washington, Oregon, and Idaho. 
SPECIMENS EXAMINED: Seattle, Piper 1125; west Klickitat County, Suksdorf 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. 
Type Locauity: “Plains of the Oregon River, in inundated tracts.” Collected by 
Nuttall. 
Rance: Washington to California. 
SPECIMENS EXAMINED: Coulee City, Piper 39044. 
ZONAL DISTRIBUTION: Arid Transition. 
3. Psilocarphus tenellus Nutt. Trans. Am. Phil. Soc. 7: 341. 1840. 
TYPE LOCALITY: Santa Barbara, California. 
Rance: British Columbia to California. 
SPECIMENS EXAMINED: Fairhaven, Suksdorf, July 15, 1890. 
4. Psilocarphus oreganus Nutt. Trans. Am. Phil. Soc. 7: 341. 1840. 
Type cocauity: ‘Near the Oregon and outlet of the Wahlamet.’”’ Collected by Nuttall. 
RANGE: Oregon, Washington, and Idaho. 
SPECIMENS EXAMINED: Klickitat County, Suksdorf 32; Howell 284; Spokane County, 
Suksdorf 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 years near the mouth of the Willamette is P. elatior Gray. 
CENTAUREA. 
Bracts of the involucre each tipped with a slender spine; rays vellow; 
pappus of unequal bristles. ..... 222220022022 22 22 ee ee 1. C. melitensis. 
Bracts of the involucre spineless, all more or less fimbriate. 
Annual; rays red, blue, white, or violet; pappus present ........... 2 C. cyanus 
Perennial; rays red; pappus none.._..............-22..-......-. 3. C. consimilis. 
1. Centaurea melitensis L. Sp Pl. 2: 917. 1753. 
Type Locauity: “In Melita.” : 
SPECIMENS EXAMINED: Whidby Island, Gardner 161; Port Townsend, Edwards in 1896; 
Seattle, Piper, September, 1898. 
2. Centaurea cyanus L. Sp. Pl. 2: 911. 1753. CORN FLOWER. 
Tyre Locatity: Europe. 
SPECIMENS EXAMINED: Wenache, Whited 1270. 
3. Centaurea consimilis Boreau, Fl. Centr. Fr. ed. 3. 2: 351. 1857. 
Type Locatiry: Angers, France. 
SPECIMENS EXAMINED: Pullman, Hardwick 2390. 
CNICUS. 
1. Cnicus benedictus L. Sp. Pl. 2: 826. 1753. BLESSED THISTLE. 
Centaurea benedicta L. Sp. Pl. ed. 2. 2: 1296 1763. 
Type Locauity: ‘In Chio, Lemus, Hispania.” 
SPECIMENS EXAMINED: Waitsburg, Horner 166; Colfax, Piper, June 28, 1901. 
