Description

Key Characters:

Growth Form: Perennial herbs.

Stems: Stems procumbent and sometimes rooting at the nodes, (1–)2–5 dm long, puberulent, rarely sparsely so, usually also sparsely hirsute at the nodes.

Roots:

Leaves: Leaves simple. Opposite, inflorescence Alternate. Blades broadly ovate to ovate–deltate, 8–25(–50) mm long, 6–23 mm wide. Upper surfaces sparsely puberulent; lower surfaces sparsely puberulent at least on the veins, sometimes also sparsely hirsute on the nerves, base of blade, or petioles. Margins irregularly coarsely toothed, the teeth acute. Petioles 3–15 mm long. Stipules absent.

Flowers: Flowers usually 6–14 in open, axillary racemes. Flowers bisexual (perfect); Pedicels 5–15 mm long, bracteoles elliptic to oblanceolate, ca. 3–4 mm long. Calyx lobes foliaceous, obovate, 3–4 mm long, enlarging up to 6 mm long in fruit, margins puberulent and sometimes also short–hirsute, apex mucronulate. Corolla blue, ca. 3.5 mm long. Stamens 2.

Fruit: Capsules broadly obovoid to subglobose; compressed; 3–3.6 mm long; 3–3.8 mm wide; margins sparsely puberulent; apex scarcely notched. Seeds ca. 16 per cell; narrowly obovate; angular; ca. 1 mm long.

Ploidy: 2n = 34

Habitat: Dry to wet areas such as pastures or disturbed areas in mesic forest.

Elevation Range: 860–2,520 m.