PIPER FLORA OF THE STATE OF WASHINGTON. 321 



1. Heuchera glabra Willd.; Roem. & Schult. Syst. 6: 216. 1820. 

 Heuchera divaricata Fisch.; Ser. in DC. Prod. 4: 51. 1830. 

 Tiardla colorans Graham, Edinb. New Phil. Joum. 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, Allen 194; Baldy Peak, Lamb 1377; 

 Mount Adams, Suksdorf 546; Skamania County, Suksdorf 968; Peshastin, Sandberg & 

 Leiberg 485; Bridge Creek, Elmer 674. 



Zonal distkibution : Hudsonian. 



2. Heuchera micrantha Dougl.; Lindl. Bot. Reg. lb: pi. 1302. 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, Parser, August, 1892; 

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

 71a; Peshastin, Sandberg cfc Leiberg 485; Columbia River, Barclay; west Klickitat County, 

 Suksdorf, 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. 

 The former seems to be the typical H. micrantha Dougl., but Rydberga has recently con- 

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



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

 Tellima racemosa Greene, Erythea 3: 55. 1896. 



Type locality: "On cliffs 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, Piper 2032; Allen \m; Mount Adams, iSw/tsdo^/, July, 1883; Hender- 

 son 2490; mountains north of Ellensburg, Brandegee 765; Nason Creek, Sandberg <& 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 cylindrica glabella Wheelock, Bull. Torr. Club 17: 203. 1880. 



Type locality: "Rocky Mountains towards. Oregon." Collected by Nuttall. 



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



Specimens examined: Sprague, Henderson, May, 1892; Spokane County, Suksdorf 299; 

 Blue Mountains, Piper, July, 18S6; Pullman, Piper 1497; without locality, Vasey in 1889; 

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



Zonal distribution: Arid Transition. 



4a. Heuchera glabella Columbiana (Rydberg). 



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



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

 being Loon Lake, Stevens County. 



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



Specimens examined: Clarks Springs, Beattie & Chapmar\ 2019; Loon Lake, Winston, 

 July 20, 1897; Ellensbui^, Elmer 419; Wenache Mountains, Whi'xd 1134. 



o N. Am. Fl. 222 . io3. 1906. & N. Am. Fl. 22^ : 1 16. 1 906. 



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