PIPER FLORA OF THE STATE OF WASHINGTON. 391 



18G0; Egboit Spr'mgis, ASandbenj d' Leiberg SQl; Wonaclio, Whited 1253; Ellensburg, Whited 

 499; Tieton River, Cotton 454; Muckleshoot, Dr. Ruhn: Seattle, Piper in 1885; Mission, 

 Kreager 486; valley of Columbia below the Chelan, Wat-mn, October 14, 1880; without 

 locality, Vasey in 1889; Pullman, Elmer 880; Piper 1653; //)/// 65(); Tukanon River, 

 Lakf. cfc Hull, July, 1892; Rattlesnake Mountains, Cotton 693; Clealuni Lake, Cotton 853. 

 Zonal distribution: Upper Sonoran and Transition. 



EIATINACEAE. Waterwout Family. 



Plants glabrous; flowers parts 2 to 4 Elatine. 



Plants pubescent ; flower parts 5 Beroia. 



ELATINE. 



Flower parts 2 or 3 ; seeds nearly straight I.E. triandra. 



Flower parts 4 ; seeds strongly curved 2. E. callforn lea. 



1. Elatine triandra Schkuhr, Handb. 1: 345. pi. 109b. f. 2. 1791. 

 Type locality: Germany. 



Range: Illinois, Nel)raska, Wyoming, Washington. Europe. 

 Specimen.s examined: Usk, Kreager 367. 



2. Elatine calif ornica A. Gray, Proe. Am. Acad. 13: 3<)1, 364. 1878. 



Type locality: "In Sierra Valley, on the Sierra Nevada, alt. 5()()0 feet," California. 

 Collected by Lemmon. 



Range: Washington to (California. 



Specimens examined: Spokane County, ;6'aA,'.s(/o// 258; Spokane, Pi/;e/" 2643. 



Zonal distribution: Arid Transition. 



BERGIA. 



1. Bergia texana (Hook.) Seub.; Walp. Repert. 1 : 285. 1842. 



Mcriniea tixana Ilook. Ic. 3: pi. 278. 1840. 



Elatine texana Torr. & Gr. Fl. 1: 678. 1840. 



Type locality: Texas. Collected by Drummoiid. 



Range: Washington to California and Texas. 



Specimens examined: West Klickitat County, Suk-^do>f 959, 618; Almota, Piper, 

 September, 1897. 



Zonal distribution: Upper Sonoran. 



VIOLACEAE. Violet Fa:mily. 



VIOLA. Violet. 

 Acaulescent. 



Flowers small, white. 1 . V. maclosJcegi. 



Flowers larger, violet. 



Lateral petals bearded at base; rootstocks thick. 

 Plants not stoloniferous; stipules small. 



Herbage glabrous 2. V. nephropJiylla. 



Herbage hirsute or villous 3. V. cuspidata. 



Plants stoloniferous; stipules large 4. F. langsdorfii. 



Lateral petals beardless; rootstocks long and slender 5. V. palustris. 



Caulescent. 



Flowers yellow. 



Stems prostrate, stolon-like; leaves evergreen. 



Leaves cordate; leaf}' branches producing petaliferous 



flowers 6. V. sempermrens. 



