Scutellaria lateriflora is a perennial herb; colonial from thread-like rhizomes and from stolons; stems solitary, 4-sided, 30-70 cm tall, hairy along angles, simple to branched, branching opposite.
Leaves opposite, stalk 0.5-2.5 cm long, blade egg-shaped, 3-8 cm long, 1.5-5 cm wide, tip long-pointed, base rounded to slightly lobed, margin toothed.
Flowers blue, 2-lipped, 0.5-0.8 cm long, upper lip helmet-shaped, lower lip longer than upper, with 2 small lateral lobes, calyx 2-lipped, to 0.25 cm long; inflorescence of axillary, one-sided, leafy-bracted racemes, 3-10 cm long; blooming June-Sept.
Fruit dry, two pitted nutlets; winter plant with pairs of scoop-shaped, untoothed lower lips of calyxes along inflorescence stems (Brown, 1976, Levine 1995).
Wetland status: FACW+.
Frequency in NYC: Infrequent.
Habitat: Wet meadows, edges of swamp forests.