Flora of North America species comparison

simple or branched, to 23(–40) cm;

branches 1–4(or 5) pairs, ascending, from middle and distal cauline nodes;

cauline internode lengths 1–3(–5) times subtending leaves.

simple or branched, to 25 cm;

branches 1–6 pairs, erect, from middle and distal cauline nodes;

cauline internode lengths (2.5–)3–5 times subtending leaves.

petiole 0–10(–13) mm;

blade long-orbiculate to triangular-ovate or oval, 2–10(–13) mm, margins crenate to incised-crenate, teeth 1–4(–6) pairs, apices obtuse to subacute.

blade broadly ovate, suborbiculate, or oval, 3–9(–11.5) mm, margins crenate to crenate-serrate, teeth 1–4(or 5), apices subacute to acute.

sparsely spicate, not 4-angled, beginning at node 3–7(–10);

proximal internode lengths 0.8–1.5 times bracts;

bracts green or suffused with purple, as broad as leaves, ovate or oval, length not more than 2 times width, 2–7 mm, base round, abaxial surface setulose on veins, adaxial puberulent and hairs eglandular, teeth 3–5(or 6) pairs, longer than wide, apices obtuse to acute, sinuses between teeth acute.

sparsely spicate, not 4-angled, beginning at node 3–8;

proximal internode lengths 1–3 times bracts;

bracts purplish adaxially, broader than leaves, ovate to obovate, length not more than 2 times width, 5–8 mm, base cuneate, surfaces hirsute and hairs eglandular or pubescent and hairs glandular, stalks sometimes flexuous, 3–6-celled, 0.2–0.6 mm, teeth (2 or)3 or 4(or 5) pairs, longer than wide, apices acute, sinuses between teeth acute.

calyx lobes straight, apex acute;

corolla white or cream, abaxial lip lilac or purple, adaxial lilac, 2.5–4.5 mm, lips equal.

calyx lobes straight, apex acute;

corolla white, 4–5.5 mm, lips +/- equal.

oval to oblong or obovate, 2.5–5 mm, apex retuse to emarginate.

oblong to elliptic, 4–5 mm, apex truncate to retuse.