Flora of North America species comparison

much branched, pubescent, gland-dotted.

branched, pubescent, gland-dotted.

alternate;

petioles 2–5 mm;

blades 3-nerved from bases, oblong to broadly ovate, 6–15 × 5–9 mm, bases narrowly cuneate, margins irregularly dentate, apices acute to obtuse, faces sparsely pubescent, gland-dotted.

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.

0.5–2.5 mm, glandular-viscid.

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

cylindric, 6–8 mm.

narrowly cylindric, 10–13 mm.

8–14;

corollas pale yellow-green, often purple-tinged, 4.8–5.7 mm.

9–24;

corollas pale yellow-green, 6–8.2 mm.

15–25 in 4–6 series, stramineous, 3–5-striate, unequal, (gland-dotted) margins scarious (apices obtuse to acute);

outer ovate, inner lanceolate.

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).

in (leafy) paniculiform or racemiform arrays.

in paniculiform arrays.

2.5–3 mm, sparsely pubescent or strigose;

pappi of 24–28 tawny, barbellate bristles.

2.5–4 mm, densely pubescent;

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

= 18.