320 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
4. Mitella ovalis Greene, Pittonia 1: 32. 1887. 
Mitella halliit Howell, Erythea 3: 33. 1895. 
Tyre Locauity: Mendocino County, California. 
Rance: Washington to north California near the coast. 
SPECIMENS EXAMINED: Hoquiam, Lamb 1056; Quinault, Conard 225. 
5. Mitella micrantha Piper, Erythea 7: 162. 1899. 
Tyre 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 Loca.ity: Craig Mountains, Nez Perce County, Idaho. 
Rance: 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 hooker: Meisn. Pl. 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.” 
Rance: Washington to Saskatchewan. 
SPECIMENS EXAMINED: Olympic Mountains, Flett 83; Mount Rainier, Allen 7; Goat 
Mountains, Allen 195; Mount Stuart, Sandberg & Leiberg 815; Mount Baker, Flett 858; 
west Klickitat County, Suksdorf 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 Locatity: “From the same region as the preceding,” i. e. “summit of Trinity 
Mountains, California.’”’ Collected by C. C. Marshall. 
Rance; North California to Washington. 
SPECIMENS EXAMINED: White Salmon River, Suksdorf 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. 22.22.2202 ..0.00. 2222-22220 22-222 ee 2. H. micrantha. 
Stamens included. 
Flowers in a loose raceme.........-.-.-.------------- 3. H. racemosa. 
Flowers in a spike or spike-like panicle. 
Yalyx white; leaves subcoriaceous, glabrous. 
Stems and petioles glabrous. ..............-.- 4. H. glabella. 
Stems and petioles villous.............2...... 4a. H. glabella columhiana. 
Calyx green, leaves not subcoriaceous. 
Leaves thin, glabrous. ........-.-.-....-.... 7. H. tenuifolia. 
Leaves thickish, not glabrous. 
Pubescence villous or hirsute........-...- 5. H. cylindrica. 
Pubescence glandular. 
Spike 2 to 4 em. long...... 2.2.22... 6. H. ovalifolia. 
Spike less than 2 cm. long. .........- 6a. H. ovalifolia alpina. 
aN. Am. FI. 227; 95. 1906. 
