PIPER FLORA OP THE STATE OP WASHINGTOK. 391 



1860; Egbert Springs, Sandberg & Leiberg 361; Wenache, 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, Watson, October 14, 1880; without 

 locality, Vasey in 1889; Pullman, Elmer 880; Piper 1653; Hull 656; Tukanon Eiver, 

 Lake & Hull, July, 1892; Rattlesnake Mountains, Cotton 693; Clealum Lake, Cotton 853. 

 Zonal distribution: Upper Sonoran and Transition. 



ELATINACEAE. Waterwort Family. 



Plants glabrous; flowers parts 2 to 4 Elatine. 



Plants pubescent ; flower parts 5 Bergia. 



ELATINE. 



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



Flower parts 4; seeds strongly curved 2. E. californica. 



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

 Type locality: Germany. 



Range: Illinois, Nebraska, Wyoming, Washington. Europe. 

 Specimens examined: Usk, Kreager 367. 



2. Elatine californica A. Gray, Proc. Am. Acad. 13: 361, 364. 1878. 



Type locality: "In Sierra Valley, on the Sierra Nevada, alt. 5000 feet," California. 

 Collected by Lemnion. 



Range: Washington to California. 



Specimens examined: Spokane County, ^wfcsrfor/" 2.58 ; Spokane, Piper 2643. 



Zonal distribution: Arid Transition. 



BERGIA. 



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



Merimea texana Hook. Ic. 3: pi. 278. 1840. 



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



Type locality: Texas. Collected by Drummond. 



Range: Washington to California and Texas. 



Specimens examined: West Klickitat County, Suksdorf 959, 618; Almota, Piper, 

 September, 1897. 



Zonal distribution: Upper Sonoran. 



VIOLACEAE. Violet Family. 



VIOLA. Violet. 

 Acaulescent. 



Flowers small, white 1. V. macloskeyi. 



Flowers larger, violet. 



Lateral petals bearded at base; rootstocks thick. 

 Plants not stoloniferous; stipules small. 



Herbage glabrous 2. F. nephrophylla. 



Herbage hirsute or villous 3. F. cuspidata. 



Plants stoloniferous; stipules large 4. V. langsdorfii. 



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



Caulescent, 



Flowers yellow. ; 



Stems prostrate, stolon-like; leaves evergreen. 



Leaves cordate; leafy branches producing petaliferous 



flowers 6. V. sempervirens. 



