392 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Leaves reniform; leafy branches producing only cleisto- 



- gamous flowers 7. V. orhiculata. 



Stems erect, not stoloniferous; leaves not evergreen. 



Leaves palmately dissected 11. V. sheUonii. 



Leaves not dissected. 



Herbage pubescent ; leaves lanceolate to ovate, sub- 

 entire 8. F. nuttaUii. 



Herbage glabrous. 



Leaves ovate, veined, sinuate-dentate or lobed. . 9. V. 'jenosa. 



Leaves cordate or reniform, acuminate 10. V. glabella. 



Flowers blue or violet. 



Leaves dissected into narrow lobes 12. V. trinervata. 



Leaves cordate, not dissected. 

 Stipules scarious, entire. 



Leaves cordate, acuminate 13. V. canadensis. 



Leaves reniform, obtuse 14. V. fettii. 



Stipules herbaceous, at least some of them serrate or in- 

 cised. 



Leaves usually brown-dotted, at least beneath; 

 stipules all serrate or laciniate. 



Herbage glabrous or nearly so 16. V. adunca. 



Herbage pubescent, the pubescence retrorse... 17. V . retroscabra. 

 Leaves dotless; caulinc stipules entire 15. V. howellii. 



1. Viola macloskeyi Lloyd, Erythea 3: 74. 1895. 

 Type locality: " In the Cascades, Oregon." 

 Range: British Columbia to Oregon. 



Specimens examined: Seattle, Piper; T&coma,, Flett 108,2222; Olympia, Henderson 2054. 



Zonal distribution: Humid Transition. 



This species has commonly, been referred to V. blanda Willd., but it seems distinct. 



2. Viola nephrophylla Greene, Pittonia 3: 144. 1896. 

 Viola cognata Greene, Pittonia 3: 145. 1896. 



Viola subjuncta Greene, Pittonia 5: 31. 1902. 



Type locality: "Valley of the Cimarron River, western Colorado." 



Range: British Columbia to Sa.skatchewan and Maine, south to Colorado. 



Specimens examined: Admiralty Head, Piper, May, 1898; Columbus, Suksdorf, April 

 13, 1886; EUensburg, Piper, May 21, 1897; North Yakima, Piper 1836; Henderson 2500; 

 Rock Lake, Piper 2798; Medical Lake, Sandberg cfe Leiberg 56. 



Zonal distribution: Arid Transition. 



3. Viola cuspidata Greene, Pittonia 3: 314. 1898. 

 Type locality: Rock County, Wisconsin. 

 Range: Washington to Wisconsin. 



Specimens examined: Pend Oreille River, LyaU in 1861. 



4. Viola langsdorfli Fischer; DC. Prod. 1: 296. 1824. 

 Type locality: " In insula Unalaschka." 



Range: Alaska to Oregon. 



Specimens examined: Port Crescent, Lawrence 273. 



5. Viola palustris L. Sp. PI. 2: 934. 1753. 

 Type locality: European. 



Range: Alaska to Labrador, southward to Colorado and the White Mountains. Europe, 

 Asia. 



