1. Lippia lanceolata Michx. (northern fog fruit, northern frog fruit)

Phyla lanceolata (Michx.) Greene

Pl. 573 a–c; Map 2682

Plants with a sometimes rhizomatous, often branched, somewhat woody rootstock. Stems 15–60(–100) cm long, rooting at some of the nodes, sparsely to moderately hairy. Leaf blades 1–6(–8) cm long, lanceolate to narrowly elliptic, narrowly rhombic, oblong-lanceolate, or occasionally ovate, mostly broadest at or below the midpoint, tapered to a sharply pointed tip, the margins with 5–11, broad, sharp teeth on each side from at or below the midpoint to the tip, the surfaces moderately to densely hairy. Inflorescences 5–7 mm in diameter, at first globose to ovoid, elongating to 3.5 cm with age, the stalk 4–9 cm long, longer than the subtending leaves. Bracts 2.5–3.0 mm long, obovate, often with purplish-tinged margins. Calyces 1.5–1.8 mm long, about as long as the corolla tube, glabrous except for a line of hairs along the keels. Corollas 2.5–3.5 mm long. Nutlets 0.9–1.2 mm long. 2n=32. May–September.

Scattered to common nearly throughout the state (nearly throughout the U.S. except some northwestern and a few northeastern states; Canada; introduced uncommonly in Europe). Banks of streams and rivers, margins of ponds, sloughs, swamps, marshes, openings of bottomland forests; also ditches, lawns, edges of crop fields, railroads, roadsides, and moist, open, disturbed areas.