392 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 



Leaves reniform; leafy branches producing only cleisto- 



gamous flowers 7. V. orhiciilata. 



Stems erect, not stoloniferous; leaves not evergreen. 



Leaves palmately dissected 11. T". sheltonii. 



Leaves not dissected. 



Herbage pubescent ; leaves lanceolate to ovate, sub- 

 entire S. F. nuttaUii. 



Herbage glabrous. 



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



Leaves cordate or reniform, acuminate 10. T'. (jlabella. 



Flowers blue or violet. 



Leaves dissected into narrow lobes 12. F. iniwrvata. 



Leaves cordate, not dissected. 

 Stipules scarious, entire. 



Leaves cordate, acuminate 13. V . canaden.sifi. 



Leaves reniform, obtus(>. 14. F. fJettii. 



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

 cised. 



Leaves usuallv brown-dotted, at lea.st beneath; 

 stipules all serrate or laciniate. 



Herbage glabrous or nearly so 16. F. adunca. 



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



Leaves dotless; cauline 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: Sentth, Piper; Tacoma, F?rfn()S,2222; Qhmpin, Hfmlcrson 2054. 



Zonal distribution: Humid Transition. 



This species has commonlj' been referred to T'. Uaridd Wiild., but it seems distinct. 



2. Viola nephrophylla (xreene, Pittonia 3: 144. 1896. 

 Viola cognata Greene, Pittonia 3: 145. 1896. 



Viola subjuncfa Greene, Pittonia 5: 31. 1902. 



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



Range: British Columbia to Saskatchewan and Maine, south to Colorado. 



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

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

 Rock Lake, Piper 2798; Medical Lake, Sandbery d' 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; Pond Oreille River, Lyall in 1861. 



4. Viola langsdorfii FLscher; DC. Prod. 1: 296. 1824. 

 Type locality: " In insula Unalaschka.'" 



Range: Alaska to Oregon. 



Specimens examined; Port Crescent, Laicrence 273. 



5. Viola palustris L. Sp. PI. 2: 9,34. 1753. 

 Type locality: European. 



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

 Asia. 



