Flora of North America species comparison

much branched, pubescent, gland-dotted.

branched from bases, puberulent, sparsely 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.

alternate;

petioles 1–2 mm;

blades obscurely 3-nerved from bases, lanceolate to lance-ovate, 5–40 × 3.5–12 mm, bases acute to cuneate, margins usually coarsely dentate, sometimes entire, apices acute, faces gland-dotted.

0.5–2.5 mm, glandular-viscid.

1–2 mm, puberulent, gland-dotted.

cylindric, 6–8 mm.

cylindric to campanulate, 7–11 mm.

8–14;

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

13–20;

corollas pale green or yellow, 4.5–6.5 mm.

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

outer ovate, inner lanceolate.

18–22 in 5–6 series, greenish or stramineous, 3–5-striate, unequal, margins scarious (apices acute to obtuse, ciliate);

outer ovate (glandular-pubescent), inner lanceolate (gland-dotted).

in (leafy) paniculiform or racemiform arrays.

in (elongate) paniculiform arrays.

2.5–3 mm, sparsely pubescent or strigose;

pappi of 24–28 tawny, barbellate bristles.

3.5–4 mm, usually glabrous, rarely sparsely pubescent;

pappi of 30–35 tawny, usually barbellate, sometimes subplumose, bristles.

= 18.

= 18.