2. S. versícolor, Nutt. Soft hairy, the hairs of the inflorescence, etc., partly viscid-glandular; stem mostly erect (1–3° high); leaves ovate or round-ovate, very veiny, rugose, the floral reduced to broadly ovate entire bracts about equalling the glandular-hairy calyx; racemes mostly simple; corolla bright blue with lower side and lip whitish.—Banks of streams, Penn. to Wisc., Minn., and southward.—Var. mìnor, Chapm. Low, slender, and thin-leaved; floral leaves small.—Mountains of Va., etc.
3. S. saxátilis, Riddell. Glabrous or slightly hairy; stem weak, ascending (6–18´ long), often producing runners, branched; leaves ovate or ovate-oblong (1–2´ long), thin, obtuse; upper bracts oblong or ovate, small, entire; raceme simple, loose.—Moist shaded banks, Del. to Ohio, south in the mountains to Va. and Tenn.
[+][+] Stem-leaves crenate-dentate or serrate (or nearly entire in n. 7), only the lowest if any cordate at base, more or less petioled; lateral lobes of the blue corolla shorter than the galeate upper lip.
4. S. serràta, Andrews. Green and nearly glabrous; stem rather simple (1–3° high), with single loosely flowered racemes; leaves serrate, acuminate at both ends, ovate or ovate-oblong; calyx, etc., somewhat hairy; corolla 1´ long, narrow, its lips equal in length.—Woods, Penn. to Ill. and N. C.
5. S. canéscens, Nutt. Stem branched above (2–4° high), with the panicled many-flowered racemes, flowers, and the lower surface of the ovate or lance-ovate acute (at the base acute, obtuse, or cordate) crenate leaves whitish with fine soft down, often becoming rather glabrous; bracts oblong or lanceolate; corolla 8–9´´ long.—River-banks, Ont. and Penn. to the mountains of N. C. and N. Ala., west to Kan. and Ark.
6. S. pilòsa, Michx. Pubescent with spreading hairs; stem nearly simple (1–3° high); leaves rather distant, crenate, oblong-ovate, obtuse, varying to roundish-ovate, the lower abrupt or heart-shaped at base and long-petioled, the upper on short margined petioles, veiny; bracts oblong-spatulate; racemes short, often branched; corolla 6´´ long, rather narrow, the lower lip a little shorter.—Dry or sterile ground, southern N. Y. to Mich., south to Fla. and Tex.
Var. hirsùta, Gray, is a large form (sometimes 3° high), more hirsute, with larger very coarsely crenate leaves (2–3´ long).—Richer soil, Ky.
Var. ovalifòlia, Benth., is a form with shorter and finer pubescence, and narrower less veiny leaves.—N. J. to Va.
7. S. integrifòlia, L. Downy all over with a minute hoariness; stem commonly simple (1–2° high); leaves oblong-lanceolate or linear, mostly entire, obtuse, very short-petioled; corolla 1´ long, much enlarged above, the ample lips equal in length.—Dry ground, N. Eng. to Fla. and Tex.
[*][*][*] Flowers solitary in the axils of the upper mostly sessile leaves, which resemble the lower ones but are occasionally reduced.