Flora of North America species comparison

much branched, pubescent, gland-dotted.

densely branched, glandular-puberulent.

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.

opposite or alternate;

petioles 0–3 mm;

blades 3–4-nerved from bases (veins prominent), deltate, lanceolate, or ovate, 10–50 × 5–25 mm, bases acute to truncate or cordate, margins usually sharply dentate or dentate-serrate, rarely entire, apices acute to acuminate, faces glabrous or strigose and minutely glandular-puberulent.

0.5–2.5 mm, glandular-viscid.

10–70 mm, hispid to hispidulous and stipitate-glandular.

cylindric, 6–8 mm.

cylindric to broadly campanulate, 9–15 mm.

8–14;

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

40–90;

corollas pale yellow-green or cream, often purple-tinged, 6–8 mm.

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

outer ovate, inner lanceolate.

24–33 in 3–4 series, green, 3–16-striate, subequal or unequal, margins narrowly scarious (apices acute to acuminate);

outer (often bright green, 4–16-striate) lance-linear, linear-ovate, or broadly ovate, inner (pale green, 3–4-striate) linear or narrowly lanceolate (often chartaceous, scabrellous, often glandular).

in (leafy) paniculiform or racemiform arrays.

in open, paniculiform arrays.

2.5–3 mm, sparsely pubescent or strigose;

pappi of 24–28 tawny, barbellate bristles.

3–5.5 mm, scabrellous;

pappi of 18–25 smooth or barbellulate bristles.

= 18.