578 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



BLEPHARIPAPPTJS. 



1. Blepharipappus glandiilosus Hook. Fl. Bor. Am. 1: 316. 1833. 



Layia glamhilosa Hook. & Arn. Bot. Beooh. Voy. 358. 1840. 



TiPE ux^ality: "On tlio plains of the Columbia in sandy soils." Collected by Douglas. 



Range: British Columbia to California and Now Mexico. 



Specimens e.xamised: Yakima Mountains, Mrs. Steinweg; Hendersonin 1891; Rtxikland, 

 Suksclorf2S-i. Psisco, Piper 295,'i; Hindshaw2\\ Su nny side, (?o«on 350; junction Crab and 

 Wilson creeks ,^an^6fr^ cfc Leiberg 299; Wallula, Cotton 1038. 



Zonal distribx'tion: Arid Transition and Upper Sonoran. 



Blepharipappus OREO ANi's Greene, I'itttonia 2: 247. 1892. Layia douglasii Hook. & 

 Arn. Bot. lieech. Voy. 35S. 1841, not Calliglossa douglassi Hook. & Arn. op. cit. 356. 

 Type locality: "On the gravelly islands of the Columbia lH?tween the Narrows and the 

 Grt>at Falls." Collected by Douglas. Not since found. We incline to the view of Dr. 

 Gray, that this Is merely an aberrant form of B. glarululoims Hook, with stouter and nearly 

 naked pappus bristles. In other rharactors it can not lx> distinguished. 



PTILONELLA. 



1. Ptilonella scabra (Hook.) Nutt. Trans. Am. Phil. Soc. 7: ;J86. 1841. 



Iilej>hari}xtppu8 scaber Hook. Fl. Bor. Am. 1: 316. 1833. 



TiPE ixx'auty: "Sandy plains of the Columbia." Collected by Dougla.s. 



Range: Wajthington and Idaho to California and Nevada. 



Specimens examined: R(K'k Ijake, Samlberg cfe Leiberg 119, Spokane, Wilkes Expedi- 

 tion; Spangle, Piper 2876; Tukanon River, Blue Mountains, Lake dc Hull 723. 



Zonal distribution: Arid Transition. 



BIDENS. Beggar ticks. 



Plant aquatic; submerged leaves capillary 3. B. beckii. 



Plants terrestrial. 



Rays none; leaves pinnatcly 3 to .5-divided 1. B. vulgata. 



Rays conspic^ious ; leaves lanceolate, serrate 2. B. cernua. 



1. Bidens vulgata Greene, Pittonia 4: 72. 1899. 

 Type LOt;ALiTY- None given. 



Range: Washington to New York .south to California and Virginia. 



Specimens examined: West Klickitat County, Suksdorf 1591, 412; North Yakima, 

 Watt, August, 1895; Loomi.ston, Elmer 611; Rock Luikc, Lake cfc Hull, August 3, 1892; 

 Spokane, f/e/Mierson, July 10, 1892; Wawawai, Piper 1863, Chewelah, ^rea^er 527; with- 

 out locality, Brandegee 895 



Zonal distribution: Upper Sonoran and Arid Transition. 



2. Biden3 cemua L. Sp. PI. 2: 832. 1753. 



Bidens cemua elliptica Wiegand. Bull. Torr, Club 28: 417. 1899. 



Bidens lonchophyUa Greene, Pittonia 4: 258. 1901. 



Bidens macounii Greene, loc. cit. 



Type locality: "Habitat in Europa ad fontes & fossas." 



Range; British Columbia to Labrador south to California and North Carolina. Europe. 

 Asia 



Specimens examined: Coupeville, Gardner 148; Ilwaco, /7e7MZerson, September 7, 1892; 

 Tacoma, F/e«157: Ellensburg, W/i,i<c<Z.592; Puyallup, Piper, September 2, 1899; Spokane, 

 Piper; Falcon Valley, Suksdoif 1592; Sumas, Lyall; Spangle, Stiksdorf 932; Waitsburg, 

 Horner 22, 333; Newport, Piper 4210; Kittitas County, Cotton 1763. 



