320 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



4. Mitella ovalis Greene, Pittonia 1: 32. 1887. 

 MitellahaUnIlowe\\,Eryt\iesi 3: 33.1895. 

 Type locality: Mendocino County, California. 

 Range: Washington to north CaHfornia near the coast. 

 Specimens examined: Hoquiam, Lamb 1056; Quinaiilt, Conard 225. 



5. Mitella micrantha Piper, Erythea 7: 162. 1899. 



Type locality: Fort Colville, Washington. Collected by Watson. 

 Range: Known only by the type specimen. 

 Specimens examined: Fort Colville, Watson 135. 



6. Mitella stauropetala Piper, Erythea 7: 161. 1899. 

 Type locality: Craig Mountains, Nez Perce County, Idaho. 

 Range: Idaho. 



Common near the Washington line and to be expected on Kamiak Butte and in the 

 Blue Mountains. 



7. Mitella trifida Graham, Edinb. New Phil. Journ. 7: 185. 1829. 

 Mitellopsis hookeri Meisn. PI. Vase. Gen. 1: 100. 1836. 



Type locality: Type raised from seeds presented by Mr. Drummond "after the return 

 of the last overland journey to the arctic coast of America." 



Range: W^ashington to Saskatchewan. 



Specimens examined: Olympic Mountains, Fleti 83; Mount Rainier, Allen 7; Goat 

 Mountains, Allen 195; Mount Stuart, Sandberg cfc Leiberg 815; Mount Baker, Fleit 858; 

 west Klickitat County, SuTcsdorf 122; Wenache Mountains, Cotton 1281. 



Rydberg « separates the Cascade and Olympic Mountain plant from that of the Rocky 

 Mountains as Ozomelis pacifica. The distinction relied upon is the slightly larger size of 

 the calyx and corolla. 



8. Mitella diversifolia Greene, Pittonia 1 : 32. 1887. 



Mitella diversiloba Greene; Piper, Erythea 7: 162. 1899, err. typ. 



Type locality: "From the same region as the preceding," i. e. "summit of Trinity 

 Mountains, California." Collected by C. C. Marshall. 

 Range: North California to Washington. 

 Speclmens examined: Wliite Salmon River, Nu^.srfo?/ 13. 



HEUCHERA. 



Stamens exserted; flowers in loose panicles. 



Leaf lobes triangular, acute; herbage glabrous 1. H. glabra. 



Leaf lobes rounded; herbage pubescent, at least the under 



leaf surface 2. i7. micrantha. 



Stamens included. 



Flowers in a loose raceme 3. H. racemosa. 



Flowers in a spike or spike-like panicle. 



Cal3"x white; leaves subcoriaceous, glabrous. 



Stems and petioles glabrous 4. //. glabella. 



Stems and petioles villous 4a. i?. glahella columbiana. 



Calyx green, leaves not subcoinaceous. 



Leaves thin, glabrous 7. H. fenuifolia. 



Leaves thickish, not glabrous. 



Pubescence villous or hirsute 5. H. cylindrica. 



Pubescence glandular. 



Spike 2 to 4 cm. long 6- H. ovalifolia. 



Spike less than 2 cm. long 6a. ^. ovalifolia alpina. 



aN. Am. Fl. 222:95. 1906. 



