7. V. blánda, Willd. (Sweet White V.) Commonly glabrous; leaves round-heart-shaped or kidney-form; petals mostly beardless, the lower strongly veined.—Damp places, everywhere. Flowers faintly sweet-scented.
Var. palustrifórmis, Gray. The larger form; upper surface of the leaves sparsely and finely hairy; petals 5´´ long, oftener bearded, less distinctly veined.—Shaded mossy ground, N. Eng. to Del., and westward.
Var. renifòlia, Gray. Slightly or strongly pubescent with soft spreading hairs; leaves round-reniform; petals usually beardless. (V. renifolia, Gray.)—Maine to Mass., western N. Y., Lake Superior, etc.
8. V. primulæfòlia, L. (Primrose-leaved V.) Smooth or a little pubescent; leaves oblong or ovate, abrupt or somewhat heart-shaped at the base; petals often acute, the lateral ones usually sparingly bearded.—Damp or dry soil, N. Eng. to Fla., toward the coast.
9. V. lanceolàta, L. (Lance-leaved Violet.) Smooth; leaves lanceolate, erect, blunt, tapering into a long-margined petiole, almost entire; petals beardless.—Damp soil; common, especially eastward.
[=][=][=] Flowers yellow.
10. V. rotundifòlia, Michx. (Round-leaved Violet.) Leaves round-ovate, heart-shaped, slightly crenate; lateral petals bearded and marked with brown lines; spur very short.—Cold woods, Maine to Minn., and south along the Alleghanies.—Smoothish; leaves 1´ broad at flowering, increasing to 3 or 4´ in the summer, then lying flat on the ground, shining above.
[*][*] Leafy-stemmed; all perennial with short rootstocks.
[+] Low, at first nearly stemless; flowers yellow; stigma concave, bearded.
11. V. Nuttàllii, Pursh. Pubescent or nearly glabrous; leaves ovate to oblong-lanceolate, obtuse, entire or slightly crenate, decurrent on the petiole.—Central Kansas and westward.