Flora of North America species comparison

much branched from bases, pubescent, often gland-dotted.

(ascending) branched, pubescent, sometimes glandular-pubescent.

opposite;

petioles 4–12 mm;

blades 3-nerved from bases, broadly ovate to deltate, 10–60 × 10–30 mm, bases truncate, hastate, or subcordate, margins usually toothed (1–3 sets of sharp teeth near bases), rarely subentire, apices attenuate, faces minutely pubescent.

alternate;

petioles 4–10 mm;

blades 3-nerved from bases, rhombic-ovate, 10–40 × 10–20 mm, bases cuneate, margins laciniate-dentate, apices acute to obtuse, faces glabrate or gland-dotted.

5–40 mm, pubescent and sometimes gland-dotted.

5–40 mm, pubescent.

cylindric to campanulate, 8–12 mm.

narrowly campanulate, 7–11 mm.

13–25;

corollas pale yellow-green, often purple-tinged, 7–8.2 mm.

16–17;

corollas cream, 6–7 mm.

17–22 in 4–6 series, greenish, often purple-tinged, 4–5-striate, unequal, margins scarious (apices acute to acuminate or mucronate, minutely pubescent);

outer lance-ovate to narrowly lanceolate (glabrous or sparsely pubescent), inner narrowly lanceolate to linear (glabrous).

35–40 in 5–7 series, 3–5-striate, unequal, (glabrous, ± chartaceous) margins narrowly scarious (apices acute to acuminate);

outer ovate, inner lanceolate.

in loose, paniculiform arrays.

in dense, paniculiform arrays.

3–5 mm, hispidulous, strigose, or glandular-pubescent;

pappi of 28–40 smooth or barbellulate bristles.

2–3 mm, pubescent;

pappi of 18–24 white, barbellate bristles.

= 18.