VIOLACEjE. 41 



stigma rostrate. V. muhlcnbcrgii Torr. V. idiginosa and asarifoUa 



Muhl, _ V. debilis Pursh. Schw. 



HAB. Swamps. Labrador, Can. and N. S. May. It. Stem 

 610 inches high. Flowers middle-sized, blue. My specimens 

 of this plant agree in every respect with those of F. canina of 

 Linnaeus from Scotland and Switzerland. 



16. V. rostrata Muhl. : stem diffuse, erect ; leaves smooth, cordate, 

 acute, serrate ; sinus open ; stipules large, lanceolate, serrate-ciliate ; 

 peduncles filiform, longer than the leaves ; petals obovate, all beard- 

 less ; spur longer than the corol. 



HAB. Rocky hills. Can. and N. S. April, May. It. Stem 

 68 inches high, smooth. Flowers large, pale blue, with a very 

 long horn or spur, by which this species can be easily recogr 

 nized. 



17. V. pubescens Ait. : villous-pubescent ; stem elongated, erect, 

 naked below ; leaves broad-ovate, cordate, dentate, more or less acu- 

 minate ', stipules large, ovate, somewhat toothed ; lateral petals 

 bearded ; spur short, acuminate. V. peniisylvanica Mich. 



b. eriocarpa Nutt. : capsule densely villoue. V. eriocarpa Schw. 

 HAB. Dry woods. Can. and N. S. W. to Council Bluffs. April, 



May. 21. Stem 6 8 inches high. Flowers middle sized, yel* 



low. 



18. V. hastata Mich. : smooth ; stem erect, simple, leafy above ; 

 leaves on long petioles, cordate -lanceolate or hastate, acuminate ; lobes 

 obtuse, dentate ; stipules minute, ciliate-dentate ; lower petal dilated, 

 sub-3-lobed ; lateral ones slightly bearded ; spur short ; stigma trun- 

 cate, hairy on the sides. 



HAB. Mountains. Penn. Muhl. May. If. Stem 8' 12 inches 

 high. Flotcers yellow. 



19. V. tenetta Muhl. : stem 3-sided, erect, mostly simple ; lower 

 leaves round, spathulate ; upper ones lanceolate; stipules large, run- 

 cinate-pinnatifid ; sepals ovate-lanceolate, nearly as long as the pe- 

 tals ; lateral petals bearded ; spur obtuse, not extended ; nectaries 

 short. V. bicolor Pursh. V. arvensis Ell. 



HAB. Sandy hills. N. Y. to Car. W. to Miss. May. If. 



Stem 2 4 inches high. Flowers small, bluish- white. De Can- 

 dolle and Hooker consider this a variety of V. tricolor, while 

 Torrey thinks it is nearer to V. arvensis. I still think it distinct. 



2. SOLEA. Ging. De Cand. 



Sepals scarcely equal, carinate ? not auricled at base, de- 

 current into a pedicel, at length reflexed. Petals nearly- 

 equal ; lower one a little larger than the rest, and somewhat 

 gibbous at base. Stamens approximate ; filaments with short 

 broadish claws at base. 



Pentandria. Monogynia. 

 4* 



