452 



VIOLACEAE 



Leaves not heart-shaped, usually sharply 

 dentate toward the base or lobed; 

 cleistogamous flowers sagittate, on 

 erect peduncles; capsules green. 

 Leaves pedately divided into linear lobes. 

 Leaves not divided but usually sharply 

 toothed toward the base. 

 Scapes usually exceeding the leaves, 

 the latter ovate-oblong, pubes- 

 cent. 

 Scapes as long as the leaves or 

 shorter. 

 Leaves lanceolate, glabrous; 

 basal lobes often dilated and 

 incised. 

 Leaves ovate-deltoid or deltoid. 

 Margins coarsely toothed 

 near the base; blades 

 sometimes lobes. 

 Margins sharply toothed 

 towards the base or 

 pectinately incised. 

 Rootstock long and filiform, producing slender 

 underground runners, except in V. reni- 

 folia. 

 Petals lilac or pale violet. 

 Petals white with purple lines on the 3 lower 

 ones. 

 Leaves glabrous on both sides, rarely 

 pubescent in nos. 20 and 21. 

 Leaves lanceolate or linear-lanceo- 

 late. 

 Leaves heart-shaped or ovate. 



Leaves ovate, acute, the base 

 subcordate obtuse or almost 

 decurrent. 

 Leaves heart-shaped, usually 

 obtuse. 

 Leaves pubescent on one or both sides. 

 Leaves reniform, pubescent; runners 



almost always small or wanting. 

 Leaves heart-shaped. 



Lateral petals beardless; leaves 

 minutely hairy above, es- 

 pecially on the basal lobes; 

 plant elsewhere glabrous. 

 Lateral petals bearded; plant 

 pubescent. 

 II. Plants with leafy stems. 



Stipules entire, the lower more or less scarious. 

 Petals 5'ellow. 



15. V. Brittoniana. 



16. V. fimbrialula. 



17. V. sagitlata. 



18. V. emarginata. 



19. V. pectinata. 



20. V. Selkirkii. 



21. V. lanceolala. 



22. V. primulifolia. 



23. V. pollens. 



24. V. renifolia. 



25. V. blanda, 



26. V. incognita. 



