288 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Range: Athabasca to Colorado and California. Siberia. 



Specimens examined: Olympic Mountains, Flett 844; Cascade Mountains, latitude 49°, 

 Lyall in 1860; Mount Adams, Flett 1131; Chiquash Mountains, Suksdorf 2426; Blue 

 Mountains, Piper' 2404. 



Zonal distribution: Arctic. 



6. Draba douglasii A. Gray, Proc. Am. Acad. 7: 328. 1868. 

 Braya oregonensis A. Gray, Proc. Am. Acad. 17: 199. 1882. 



Type locality: "High Sierra Nevada; on the gravelly 'divide' between East Cai-son 

 and West Walker Rivers." Collected by Anderson. Also from "the interior of Oregon 

 or California." Collected by Douglas. 



Specimens examined: Klickitat Hills, Hoivell 50, 386. 



7. Draba lonchocarpa Rydberg, Afem. N. Y. Bot. Gard. 1: 181. 1900. 



Draba nivalifi elongata S.Wats. Proc. Am. Acad. 23:258. 1888, not D. elongata Host. 

 1827. 



Type locality: "Rocky Mountains, from British America to Wyoming and the Uintas; 

 Mt. Adams." 



Range: British Columbia and Alberta to Utah. 



Specimens examined: Mount Rainier, Pijxr 2060; Mount Baker, Flett 856; ilount 

 Adams, Suksdorf 239; Chiquash Mountains, Suksdo if 2541. 



Zonal distribution: Arctic. 



8. Draba aureola S. Wats. Bot. Cal. 2: 430. 1880. 



Type locality: "Sierra Nevada, in Sierra Count}-," California. 



Range: Washington to California. 



Specimens examined: Mount Rainier, Flett 286; Pipe?- 2061; SinitJt. tfc Piper 699. 



Zonal distribution; j\j-ctic. 



Draba lEmmoni S. Wats. This species is accredited to Washington on a specimen col- 

 lected by Flett in the Olympic Mountains and thus determined by Wiegand.a This speci- 

 men certainly is not D. lemmoni, but is probably an undcscribed species. The material is 

 too young, however, for satisfactory description. 



DENT ARIA. 



Basal leaves cordate-orbicular, crenate or sinuate \. D. tenclla. 



Basal leaves parted or divided into 3 or 5 segments. 



Petals 10 to 12 mm. long 2. D. maerocarpa. 



Petals 12 to 16 mm. long 3. Z). maerocarpa pulelicrrlma. 



1. Dentaria teneUa Pursh, Fl. 2: 439. 1814. 



Type locality: "On the banks of the Columbia." Collected by Lewis, the exact place 

 near the mouth of Sandy River, Oregon. 



Range: Washington and Oregon. 



Specimens examined: Whidb}^ Island, Gardner 14; Silverton, Bouck 21; Tacoma, 

 Flett 70; Snoqualmie, Hindshaw; upper Nisqually Valley, Allen 51; Nisqually tide flats, 

 Flett 95; west Klickitat County, Suksdorf 4, 235; Seattle, Piper in 1888. 



Zonal distribution: Humid Transition. 



2. Dentaria maerocarpa Nutt.; Torr. & Gr. Fl. 1: 88. 1838. 

 Cardamine quercetonim Howell, Erythea 3:33. 1895. 



Cardamine tenella covilleana Schulz; Engler's Bot. Jahrb. 32:391. 1903. 



Cardamine tenella dissecta Schulz, op. cit. 



Cardamine tenella quercetorum Schulz, op. cit. 390. 



Type locality: "Woods of the Oregon." Collected by Nuttall. 



«Bull. Torr. Club 5: 209. 1874. 



