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Puberulent or nearly glabrous, 5–12´ high; leaves lanceolate or linear-oblong, irregularly serrate or nearly entire, tapering to a slender petiole; inflorescence virgate spiciform, interrupted; upper lip of calyx entire, lower 2-cleft; corolla blue, 4´´ long, little exserted; style glabrous or nearly so.—Plains,

Seashore 13 Panicle virgate or thyrsoid; leaves nearly entire 14–17 Heads very small in a short broad panicle; leaves nearly entire 18–20 Heads racemosely paniculate; leaves ample, the lower serrate 21–28 § 1.

Stem 1–4° high, terminated by a simple virgate or several panicled spikes; leaves thickish; calyx tubular-campanulate, its teeth half the length of the tube; corolla 1´ long.—Wet grounds, from N. Vt. west and southward.

Low, more or less pubescent; leaves ovate-oblong to cuneate-lanceolate, usually acute and minutely serrulate, thinnish, shining at least above; flower-clusters sometimes virgate on naked branches; corolla rose-color; berry black.—In swamps, south of our range, but represented by Var. tenéllum, Gray.

Heads small, in a narrow virgate or thyrsoid panicle; scales thin, acute; leaves nearly entire.