PIPER—-FLORA OF THE STATE OF WASHINGTON. 305 
SPECIMENS EXAMINED: Charleston, Piper, July 21, 1895; Coulee City, Piper 3877; 
between Coulee City and Waterville, Spillman, May, 1896. 
ZONAL DISTRIBUTION: Upper Sonoran. 
3. Lepidium menziesii DC. Syst. 2: 539. 1821. 
Type Locauiry: ‘Hab. in ora occidentali Americae borealis.’’ Collected by Menzies. 
Rance: British Columbia to Oregon, near the seashore principally. 
SPECIMENS EXAMINED: Clallam County, Elmer 2697; Hoquiam, Lamb 1153; Fairhaven, 
Piper 2787; San Juan Island, Lyall in 1858; Seattle, Piper 444; White Salmon, Suksdorf 
242; Seattle, Henderson 77. 
ZONAL DISTRIBUTION: Humid Transition. 
This species was formerly confused with L. virginicum L., which does not occur in Wash- 
ington. 
4. Lepidium medium Greene, Erythea 3: 36. 1895. 
Lepidium intermedium A. Gray, Pl. Wright. 2: 15. 1853, not Richard. 
Tyre Locaity: “Ravines of the Organ Mountains, northeast of El Paso,’’ Texas. 
Rance: Washington and Idaho to California and Texas. 
SPECIMENS EXAMINED: Lake Cushman, [Henderson 2045; Cascade Mountains, latitude 
49°, Lyall in 1859; Bingen, Suksdorf 2362; Wawawai, Lake & Hull 479; Piper 3063, 3533, 
3811; Waitsburg, Horner 4. 
ZONAL DISTRIBUTION: Upper Sonoran. 
5. Lepidium nitidum Nutt.; Torr. & Gr. Fl. 1: 116. 1838 
Type LocaLiry; Near Santa Barbara, California. 
Rance: Washington to California. 
SPECIMENS EXAMINED: Klickitat County, Howell, June, 1879; Rockland, Suksdorf 241; 
Granddalles, Gorman, April, 1895. 
ZONAL DISTRIBUTION: Upper Sonoran. 
6. Lepidium dictyotum A. Gray, Proc. Am. Acad. 7: 329. 1868. 
Type Locauity: ‘“ Nevada, at Steamboat Springs.” 
Rance: Washington to Nevada and California. 
SPECIMENS EXAMINED: Klickitat County, Suksdorf 844; Sprague, Sandberg & Leiberg 
138: Duck Lake and Crab Creek, Suksdorf 244; Walla Walla, Brandegee 646; Waitsburg, 
Horner 604; Bolles Junction, Horner 607. 
ZONAL DISTRIBUTION: Arid Transition. 
THLASPI. 
Pods large, winged, deeply notched; annual. .....-.-.-.------------+--- 1. T. arvense. 
Pods small, scarcely winged or notched; perennials. 
Leaves green, not glaucous.........-.------------+-----++--------- 2. T. alpestre. 
Leaves glaucous. ......-...------ 22-2 eee ee ee ee ee eee ee ee eee ee 3. T. glaucum. 
1. Thlaspi arvense L. Sp. Pl. 2: 646. 1753. PENNY CREss. 
Type LocaLity: European. 
SPECIMENS EXAMINED: Pullman, Elmer, June, 1897. 
2. Thlaspi alpestre L. Sp. PI. ed. 2. 2: 903. 1763. 
Tyee Locauity: “Habitat in Austria.”’ 
RancGE: British Columbia and Montana to Mexico. Europe. Asia. 
SPECIMENS EXAMINED: Thirty miles south of Mount Adams, Flett 1132; Mount Rainier, 
Flett 227; Mount Stuart, Elmer 1210; Sandberg & Leiberg 811; Yakima County, Henderson 
2386; upper Nisqually Valley, Allen 300. 
ZONAL DISTRIBUTION: Arctic. 
29418—06 mM——20 
