PIPER- — FLORA OF THE STATE OF WASHINGTON. 321 



1. Heuchera glabra Willd.; Roem. & Schult. Svst. 6: 21(). 1820. 

 Heuchera divaricata Fisch.; Ser. in DC. Prod. 4: .51. 18-30. 

 Tiarella colorans Graham, Edinb. New Phil. Journ. 7: 349. 1829. 

 Type locality: Western North America. 



Range: Alaska to Oregon. 



Specimens examined: Snoqualmie, Parker, August, 1892; Mount Rainier, Smith, 

 August, 1890; Piper 2027, 548; Goat Mountains, Alien 194; Baldy Peak, Lamh 1377; 

 Mount Adams, Suksdorf 546; Skamania County, SuJcsdorf 968; Peshastin, Sandherg & 

 Leiherrj 48.5; Bridge Creek, Elmer 674. 



Zonal distribution: Iludsonian. 



2. Heuchera micrantha Dougl.: Lindl. Bot. Reg. 15: pi. 130'2. 1829. 

 Heuchera barbarossa Presl, Rel. Haenk. 2: 56. 1835. 



Type locality: "Mountainous woods, near the Grand Rapids [Cascades] of the Colum- 

 bia." Collected by Douglas. 



Range: British Columbia to north Idaho and California. Mexico. 



Specimens examined: Clallam County, E'Zmer 2651 ; Snoqualmie, Po/fe/-, August, 1892; 

 Skokomish Valleys, Kincaid, May, 1892; upper Nisqually Valley, Allen 10; Silverton, Bouck 

 71a; Peshastin, Sandherg <& Leiberg 485; Columbia River, Barclay; west Klickitat County, 

 Siiksdorf, June, 1874; Union City, Piper in 1890. 



Zonal distribution: Humid Transition and Canadian. 



Two forms occur, one with the petioles very villous, the other having them nearly glabrous. 

 Tiie former seems to be the typical H. micrantha Dougl., but Rydberg" has recently con- 

 sidered it a distinct species, naming it //. nuttallii. 



3. Heuchera racemosa S. Wats. Proc. Am. Acad. 20:365. 1885. 

 TelVuita racemosa Greene, I{)iythea 3: 55. 1896. 



Type locality: "On dill's of Mt. Adams, Wash., at 7-8000 ft. altitude." Collected by 

 Suksdorf. 



Range: Washington. 



Specimens examined: Olympic Mountains, Piper 2215, 913; Clallam County, Elmer 

 2641; Mount Rainier, Pipe/- 2032; Allen 196; Mount Adams, 57/tscZo//, July, 1883; Hender- 

 son 2490; mountains north of Ellensburg, Brandegee 765; Nason Creek, Sandberg d' Leiberg 

 662; Bridge Creek, Elmer 689. 



Zonal distribution: Arctic. 



This species forms the type of the genus Elmera proposed by Rydberg.6 



4. Heuchera glabella Torr. & Gr. Fl. 1: 581. 1840. 



Heuchera cylirulrica glabella Wheelock, Bull. Torr. Club 17: 203. 1890. 



Type locality: "Rock}^ Mountains towards Oregon." Collected in' Nuttall. 



Range: Eastern Oregon to Montana and northward into British Columbia. 



Specimens examined: Spr&gue, Henderson, M&y, 1892; Spokane County, .S'(/A;scZo// 299; 

 Blue Mountains, Piper, July, 1866; Pullman, Piper 1497; without locality, Vasey in 1889; 

 Clarks Springs, Kreager 71 ; Chelan Butte, Cotton 183. 



Zonal distribution: Arid Transition. 



4a. Heuchera glabella columbiana (Rydbeig). 



Heuchera columbiana Rydberg, N. Am. Fl. 22-: 116. 1905. 



Type locality: "Near Swan Lake, Washington." Swan Lake is erroneous, the locality 

 being Loon Lake, Stevens County. 



DiiTers from H. glabella principally in the hirsute stems and petioles. 



Specimens examined: Clarks Springs, Beattie cf; Chapman 2019; Loon Lake, Winston, 

 July 20, 1897; Ellensburg, Elmer 419; Wenache L.'ountains, Whi'ed 1134. 



aN. Am. Fl. 222:103. 1906. &N. Am. Fl. 22-: 116. 1906. 



29418—06 M 21 



