PIPER FLORA OF THE STATE OF WASHINGTON. 579 



Prof, E. L. Greene considers that the American plants generally referred to Bidens 

 cernua represent not less than 13 species. The distinctions relied upon seem very slight. 

 The western Washington specimens apparently are all referable to B. macounii, while most 

 of the eastern Washington plants belong to B. lonchophylla. 



One of these Washington forms was mistaken for Bidens chrysanthemoides by Hooker, 

 Fl.Bor. Am. 1:314. 1834. 



3. Bidens beckii Torr.; Spreng. Neu. Entd. 2: 135. 1821. 

 Megalodonta remota Greene, Pittonia 4: 272. 1901. 

 Type locality: Near Schenectady, New York. 



Range: Washington, Manitoba, and Quebec to Missouri and New Jersey. 

 Specimens examined: Seattle, Pi'per in 1890; Davis Lake, Kreager 442. 



Bidens dentata (Nutt.) Wiegand, Bull. Torr. Club 26 : 412. 1899. Bidens quadriaristata 

 dentata Nutt. Trans. Am. Phil. Soc. 7: 368. 1841. Bidens cernua elata Torr. & Gr. Fl. 

 2: 352. 1842. Type locality: " Wappatoo Island, at the outlet of the Wahlamet, Oregon." 

 There is much doubt about the identity of this plant, which may perhaps be cleared up by 

 collecting new material at the type locality. 



COREOPSIS. 



1. Coreopsis atkinsoniana Dougl.; Lindl. Bot. Reg. 16: pi. 1376. 1830. 



Calliopsis atkinsoniana Hook. Fl. Bor. Am. 1: 311. 1833. 



Type locality: "Mewries [Menzies?] Island, in the river Columbia." Collected by 

 Douglas. 



Range: British Columbia to Oregon and Idaho. 



Specimens examined: Fort Vancouver, To^mte; Douglas; Wcnache, Whited 1150; Cas- 

 cades to Colville, Lyall in 1860; mouth of Chelan River, Watson 217; Old Fort Colville, 

 Watson; Chelan Falls, Lake & Hull 748; LoomLs, Elmer 601 ; head of Grand Coulee, McKay, 

 25; Spokane, //cTuZerson, July 9, 1892; without locality, Fasei/ 551; Lake Kalispcl, ^rea^er 

 315. 



Zonal distribution: Arid Transition. 



BUDBECKIA. Cone flower. 



Leaves oblong-lanceolate, hispid or hirsute 1. R. hirta. 



Leaves ovate or ovate-lanceolate. 



Glabrous or nearly so, somewhat glaucous ; leaves entire or dentate . 2. li. occidentalis. 



Pubescent; leaves mostly 3 to 5-parted toward the base 3. li. alpicola. 



1. Rudbeckia hirta L. Sp. PI. 2: 907. 1753. 

 Type locality: "In Virginia, Canada." 



Range: Saskatchewan and Canada to Colorado, Texas, and Florida. Introduced in 

 Washington. 



Specimens examined: Whidby Island, Gardner 151; Tacoiua, Flett 122; Snoqualmic, 

 Miss Parker, July, 1892. 



Introduced from the eastern States. 



2. Rudbeckia occidentalis Nutt. Trans. Am. Phil. Soc. 7: 355. 1840. 



Type locality: "Rocky Mountains and woods of the Oregon, particularly in the Blue 

 Mountain range." Collected by Nuttali. 



Range. Washington to Montana and California. 



Specimens examined: Marshall Junction, Piper, July 2, 1896; Spokane County, Suks- 

 dorfS56, Blue Mountains, Columbia County, Piper, July 20, 1896. 



Zonal distribution : Arid Transition and Canadian. 



