40 VIOLACE.E. 



smooth. Flowers large, pale blue, with a very long horn or spur, by which thi 

 species can be easily recognized. Spurred Violet. 



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

 below ; leaves broad-ovate, cordate, dentate, more or less acuminate ; stip- 

 ules large, ovate, somewhat toothed ; lateral petals bearded ; spur short, 

 acuminate. V. Pennsylvania Mich. 



var. 1. eriocarpa Nutt : capsule densely villous. V. eriocarpa Schw. 



var. 2. scabriuscula Torr. fy Gr. : stems several, often decumbent, nearly 

 smooth, or with a pubescent line on one side ; leaves somewhat scabrous, 

 but hardly pubescent ; capsule smooth or villous. V. scabriuscula Schw. 



Dry woods. Can. to Geor. W. to Council Bluffs. May. 1\.. Stem 68 

 inches high. Flowers middle-sized, yellow. Var. 2 is found near Albany and in 

 Oneida county, N. Y. Yellow Violet. 



19 V. hastcda Mick. : smooth ; stem erect, simple, leafy above ; leaves on 

 long petioles, cordate-lanceolate or hastate, acuminate ; lobes obtuse, den- 

 tate ; stipules minute, ciliate-dentate ; lower petal dilated, sub-3-lobed ; 

 lateral ones slightly bearded ; spur short ; stigma truncate, hairy on the 

 sides. 



Mountains. Penn. to Flor. May. 7J.. Stem 6 12 inches high. Flowers 

 yellow, smaller than in the preceding. Halberd-leaved Yellow Violet. 



20. V. tricolor Linn. : root somewhat fusiform ; stem branching, diffuse ; 

 lowest leaves ovate, cordate ; stipules runcinately pinnatifid, the middle lobe 

 crenate ; petals with short claws ; spur thick, obtuse, not produced ; appen- 

 dages short ; seeds oblong-ovate. 



var. arvensis D. C. Torr. <$ Gr. : annual ; stems assurgent ; upper leaves 

 spatulate-ovate ; petals scarcely longer than the calyx, yellowish, blue, or 

 spotted with purple. V. bicolor Pursh. V. arvensis Ell. V. tenella Muhl. 



Dry hills. N. Y. to Geor. W. to Miss. May. .Stem slender, 3 8 inches 

 high. Leaves less than an inch long. Flowers small, pale blue. I follow 

 Hooker, Torrey and Gray, in uniting our plant with V. tricolor, although not 

 without some hesitation. Pansey. Heart's Ease. 



2. SOLEA. Ging. D. C. Solea. 



(In honor of W. Sole, author of an Essay on the genus Mentha.) 

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

 rent into a pedicel, at length reflexed. Petals unequal, the 

 lowest one 2-lobed and somewhat gibbous at base. Stamens 

 cohering, the lowest two bearing a gland above the middle. Cap- 

 sule somewhat 3 -sided. Seeds 6 8, very large. 



S. concolor D. C. S. stricta Spreng. Viola concolor Fors. Nuti. 

 Shady woods. N. Y. to Car. W. to Miss. ; rare. April, May. %. Stem 

 2 4 feet high, simple, erect. Leaves cuneate-lanceolate, sessile, irregularly 

 toothed above. Peduncles short, 2 3-flowered. Flowers small, greenish. Ca- 

 lyx nearly as long as the petals. Spur none. I possess fine specimens of this 

 plant, which were gathered near Lebanon, N. Y. It is also found in the western 

 part of that state, and in Delaware county, Penn. Green-flowered Solea. 



