Flora of North America species comparison

usually dark purple at nodes, usually otherwise greenish, rarely purplish green, usually solid, rarely ± hollow near bases, glabrous proximally, ± glandular-puberulent distally and among heads.

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(–5s);

petioles 5–15(–20) mm, glabrous or sparingly puberulent, rarely ciliate;

blades pinnately veined, lance-ovate or ovate to deltate-ovate, mostly (7–)9–26(–30) × (2.5–)3–15(–18) cm, bases abruptly or gradually tapered, margins coarsely serrate, abaxial faces sparingly and minutely gland-dotted and densely pubescent to glabrate, adaxial faces sparingly puberulent and glabrescent or glabrous.

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–)5–7(–8);

corollas usually pale pinkish or purplish, 4.5–7 mm.

(8–)9–20(–22);

corollas purplish, 4.5–7.5 mm.

usually glabrous, sometimes sparsely hairy.

glabrous or densely pubescent.

in loose, convex, compound corymbiform arrays.

in flat-topped, corymbiform arrays.

3–4.5 mm.

3–5 mm.

= 20.