PIPER—FLORA OF THE STATE OF WASHINGTON. 411 
SPECIMENS EXAMINED: Seattle, Smith 411; Falcon Valley, Suksdorf 378, 558; foothills 
Blue Mountains, Horner 176; Blue Mountains, Horner, August, 1896; Spokane, Piper, 
June, 1897, Sandberg, McDougal, & Heller, 905; Pullman, Henderson 2470; Piper 2657 ; 
2655; Wawawai, Elmer 757; Piper, June 23, 1901; Squaw Creek, Cotton 877; Rattlesnake 
Mountains, Cotton 690. 
ZONAL DISTRIBUTION: Transition. 
. 
3. Boisduvalia giabella (Nutt.) Walp. Repert. 2: 89. 1843. 
Ocenothera glabella Nutt.; Torr. & Gr. Fl. 1: 505. 1840. 
Tyre Loca.ity: “Plains of the Oregon east of Wallawallah.”” Collected by Nuttall. 
Rance: British Columbia to Montana and California. 
SPECIMENS EXAMINED: Pullman, Piper 2656; Hull, July, 1892: 
ZONAL DIsTRIBUTION: Arid Transition. 
CLARKIA. 
Petals entire...... 2.02.22 2-222-222-2222 -- +--+ +e ee -- Seen eee 1. C. rhomboidea. 
Petals 3-lobed......... 0... 2-2-2 2-2-2 2 2.C. pulchella. 
1. Clarkia rhomboidea Dougl.; Hook. Fl. Bor. Am. 1: 214. 1833. 
Type Locauity; “From the Great Falls of the Columbia to the Rocky Mountains.” 
Collected by Douglas. 
Rance: Washington and Idaho to Nevada and California. 
SPECIMENS EXAMINED: Wenache Region, Brandegee 780; Wenache Gulch, Whited 1165; 
Klickitat River, Flett 1234; Cascade Mountains, Mrs. Steinweg in 1894; Stehekin, Whited, 
July 5, 1901; Loon Lake, Winston, July 20, 1897; without locality, Vasey 238; without 
locality, Lyall in 1861; Blue Mountains, Piper, July, 1896. 
ZONAL pistriBpuTION: Arid Transition. 
2. Clarkia pulchella Pursh, Fl. 1: 260. 1814. 
Type Ltocauiry: “On the Kooskooskee and Clark’s Rivers.” Collected by Lewis. The 
first locality is in Idaho, opposite the town of Kamiah, the Camp Chopunnish, where Lewis 
collected many plants. 
Rance: Washington and Idaho to California. 
SPECIMENS EXAMINED: North Yakima, Mrs. Steinweg in 1894; Pasco, Hindshaw 38; 
Columbia River, latitude 46° to 49°, Lyall in 1861; between Coulee City and Waterville, 
Spillman, May, 1896; Sprague, Henderson, May, 1892; Sandberg & Leiberg 211; Tukanon 
River, Lake & Hull 531: Pullman, Piper 1630; Tampico, Flett 1232; Colville Reservation, 
Griffiths & Cotton 376. 
ZONAL pistriBuTiON: Arid Transition and Upper Sonoran. 
HALORAGIDACEAE. Water Mitrorm FaAminy. 
Stamen 1; ovary l-celled...-............-------------------------- Hiervuris. 
Stamens 2 to 8; ovary 2 to 4-celled... 2.22... 22-22-22 ee ee MyriorHyL_uM. 
HIPPURIS. Maresraiv. 
Alpine plant 2 to 5 em. high........-.-.-.-.------------------------- 1. H. montana. 
Lowland plant 20 to 50 em. high......-.....------------------------- 2. H. vulgaris. 
1. Hippuris vulgaris L. Sp. Pl. 1: 4. 1753. 
Type LocaLiry: European. 
RaNGE: Arctic regions, southward to California, New Mexico, and Maine. Europe, 
As ia . 
