Flora of North America species comparison

branched, pubescent, gland-dotted.

branched from above bases, ± glabrous.

mostly alternate, sometimes opposite;

petioles 0–5 mm;

blades 3-nerved from bases (venation raised, reticulate), elliptic to lanceolate or ovate to subdeltate, 20–70 × 7–20 mm, bases ± cuneate, margins crenate to serrate, apices acute, faces glandular-pubescent.

alternate;

petioles 0–5 mm;

blades 3-nerved from bases, lance-elliptic, lance-ovate, lance-linear, or linear (folded or falcate), 10–130 × 2–9 mm, bases rounded or tapering, margins entire or nearly so, apices acuminate, faces gland-dotted, often puberulent (shiny).

2–15 mm, tomentose, often gland-dotted.

0–3 mm, glabrous or glutinous.

narrowly cylindric, 10–13 mm.

cylindric, 5–7 mm.

9–24;

corollas pale yellow-green, 6–8.2 mm.

3–7;

corollas cream, 3.5–4.5 mm.

18–20 in 3–4(–5) series, green or purplish, 5–9-striate, unequal, margins scarious (apices acute, attenuate, obtuse, or nearly rounded);

outer ovate (lengths evenly grading to inner, margins ciliate, faces pubescent, often gland-dotted), inner narrowly lanceolate to linear-oblong (faces glabrous).

10–24 in 6–8 series, pale green to stramineous, 3–5-striate, unequal, (glutinous) margins scarious;

outer ovate (apices acute), inner lanceolate (apices obtuse).

in paniculiform arrays.

in (leafy) paniculiform arrays.

2.5–4 mm, densely pubescent;

pappi of 32–43 white, mostly barbellate, sometimes subplumose, bristles.

1.8–2.5 mm, scabrous;

pappi of 30–40 barbellulate bristles.