Flora of North America species comparison

usually purple-spotted, sometimes uniformly purple, solid, glabrous proximally, glandular-puberulent distally.

usually purple-spotted, sometimes uniformly purple, usually solid, sometimes hollow near bases, glabrous proximally to densely puberulent throughout, glandular-puberulent distally.

mostly in 3s–4s;

petioles 7–25 mm, glabrous;

blades usually ± 3-nerved, rarely pinnately veined, deltate-ovate or ovate to lance-ovate, 5–16 × 2–8 cm, relatively thick and firm (often rugose), bases usually abruptly contracted to petioles, margins coarsely serrate, abaxial faces densely gland-dotted and sparingly hirsute (at least on midribs and main veins), adaxial faces scabrous, glabrescent.

in (3s–)4s–5s(–6s);

petioles 5–20 mm, glabrous or pubescent;

blades pinnately veined, lance-elliptic to lanceolate or lance-ovate, mostly (6–)8–23(–30) × (1.5–)2–7(–9) cm, bases gradually or abruptly tapered, margins sharply serrate or doubly serrate, abaxial faces gland-dotted and densely pubescent to glabrate, adaxial faces sparingly hairy or glabrous.

often purplish, 6.5–9 × 2.5–5 mm.

often purplish, 6.5–9 × 3.5–7 mm.

(4–)5–9(–10);

corollas usually dark purple, rarely pinkish or white, 4.5–7 mm.

(8–)9–20(–22);

corollas purplish, 4.5–7.5 mm.

glabrous or sparsely hairy.

glabrous or densely pubescent.

usually in ± convex, sometimes flat-topped, corymbiform arrays.

in flat-topped, corymbiform arrays.

3–4.5 mm.

3–5 mm.

= 20.

= 20.