. 
392 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Leaves reniform; leafy branches producing only cleisto- 
gamous flowers........ 22.2222. 2222222. 2 eee eee 7. V. orbiculata. 
Stems erect, not stoloniferous; leaves not evergreen, 
Leaves palmately dissected... ....................... 11. V. sheltonii. 
Leaves not dissected. 
Herbage pubescent; leaves lanceolate to ovate, sub- 
entire... 22.222 8. V. nuttallii. 
Herbage glabrous. 
Leaves ovate, veined, sinuate-dentate or lobed... 9, V. -enosa. 
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. flettii. 
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........ 2... . 16. V. adunea. 
Herbage pubescent, the pubescence retrorse... 17. V’. retroseabra. 
Leaves dotless; cauline stipules entire............. 15. V. howellii. 
1. Viola macloskeyi Lloyd, Erythea 3:74. 1895. 
Tyre Locatity: ‘‘ In the Cascades, Oregon.” 
Rance: British Columbia to Oregon. 
SPECIMENS EXAMINED: Seattle, Piper; Tacoma, lett 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 Locauity: ‘‘ Valley of the Cimarron River, western Colorado.” 
Rance: 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, Sandberg & Leiberg 56. 
ZONAL DISTRIBUTION: Arid Transition. 
3. Viola cuspidata Greene, Pittonia 3: 314. 1898. 
Type Locauity: Rock County, Wisconsin. 
Rance: Washington to Wisconsin. 
SPECIMENS EXAMINED: Pend Oreille River, Lyall in 1861. 
4. Viola langsdorfii Fischer; DC. Prod. 1: 296. 1824. 
TyPE Locatity: ‘‘In insula Unalaschka.”’ 
Rance: Alaska to Oregon. 
SPECIMENS EXAMINED: Port Crescent, Lawrence 273. 
5. Viola palustris L. Sp. Pl. 2: 934. 1753. 
TYPE LocaLiry: European. 
Rance: Alaska to Labrador, southward to Colorado and the White Mountains. Europe. 
Asia. 
