382 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
2a. Euphorbia serpyllifolia consanguinea Boiss. in DC. Prod. 15?: 43. 1862. 
Type Locatity: Ad lacum Winnipeg (Bourgeau), in valle Missouri superioris (Neuwied), 
territ. Nebraska (Hayden), Novo Mexico (Wright, Fendler), Kansas et Texas (ex Engelm.) 
Yalifornia (Engelm.). 
RanGE: Washington to Saskatchewan, Texas, and California. 
SPECIMENS EXAMINED: West Klickitat County, Suksdorf 210. 
8. Euphorbia maculata L. Sp. Pl. 1: 455. 1753. 
Type Locauity: “Habitat in America septentrionali.”’ 
RANGE: Most of temperate North America. 
SPECIMENS EXAMINED: Meyers Falls, Kreager, August 25, 1902. 
4. Euphorbia peplus L. Sp. Pl. 1: 456. 1753. 
TyPE LocaLity: European. 
SPECIMENS EXAMINED: East Seattle, Hindshaw, June, 1897. 
5. Euphorbia cyparissias L. Sp. Pl. 1: 461. 1753. 
Tyre Locauiry: “ Habitat in Misnia, Bohemia, Helvetia, G. Narbonensi.” 
SPECIMENS EXAMINED: Pullman, Piper, June, 1897. 
6. Euphorbia arkansana missouriensis Norton, Rep. Mo. Bot. Gard. 11: 103, 1900. 
Tyre LocaLity: Randolph, Missouri. 
Rance: Washington to Minnesota, Kansas, and New Mexico. 
SPECIMENS EXAMINED: Walla Walla Region, Brandegee 1072; Almota, Lake & Hull 641; 
Wawawai, Elmer 758. 
ZONAL DISTRIBUTION: Upper Sonoran. 
EUPHORBIA PLATYPHYLLA L., This European species was reported by Hooker from the 
“plains of the Columbia River,” collected by Douglas, but there is no recent evidence of 
such occurrence. 
PISCARIA. 
1. Piscaria setigera (Hook.) 
Eremocarpus setigerus Benth. Bot. Sulph. 53. pl. 26. 1844. 
Croton ? setigerus Hook. Fl. Bor. Am. 2: 141. 1838. 
Type Locaity: “ Plentiful on Menzies’ Island, and on sandy banks of the Columbia 
upwards.”’ Collected by Douglas. 
Rance: Washington to California. 
SPECIMENS EXAMINED: Bingen, Piper, September, 1903; Granddalles, Westgate 927. 
ZONAL DISTRIBUTION: Arid Transition. 
As pointed out by Coville, ® Eremocarpus was first used for a genus of Hypericaceae by 
Reichenbach in 1837, and is therefore not available for our plant. The new name is given 
in allusion to the use of the plant by the Indians to stupefy fish by throwing quantities of 
it in the streams. It is rather strange that the plant should first have been found at the 
extreme northern point of its range. 
CALLITRICHACEAE. Water Srarwortr FAMILy. 
CALLITRICHE. 
Leaves all submersed, linear, l-nerved.........-...-.--..------------- 1. C. palustris. 
Floating leaves obovate-spatulate, 3-nerved. 
Styles about as long as the fruit.......-...-.-.-.-.--------------- 2. C. verna. 
Styles twice as long as the fruit.........2.2.-2.2.2020-.---.------- 3. C. bolanderi. 
a Fl. Bor. Am. 2: 140. 1838. b Contr. Nat. Herb. 4: 194. 1893. 
