Flora of North America species comparison

puberulent, glabrescent.

puberulent, glabrescent.

mostly cauline;

blades ± lanceolate, 5–12(–20+) cm × 5–18(–40+) mm, l/w = 5–9(–14+), abaxially glabrate (pitted, with awl-shaped hairs in pits), adaxially scabrellous, resin-gland-dotted (sometimes pitted).

mostly cauline;

blades ± lanceolate, 12–25+ cm × 20–60+ mm, l/w = (3.5–)4–7+, abaxially scabrellous (hairs awl-shaped), sometimes glabrescent, not or sparsely resin-gland-dotted, adaxially strigillose, glabrescent, not resin-gland-dotted.

1–8(–12+) mm.

1–12(–20+) mm.

± campanulate, 5–7(–8+) × 4–6 mm.

broadly campanulate to hemispheric, 4–5+ × 4–5 mm.

12–25+.

(9–)18–24(–30).

25–35+ in 4–5+ series, glabrescent, margins arachno-ciliolate, the outer lance-ovate, 1–3 mm, inner oblong to linear-oblong, 5–7+ mm, tips acute or rounded-apiculate.

30–40+ in 4–5 series, glabrate, margins ciliolate, the outer lance-ovate, 1–2 mm, inner oblong, 3.5–5 mm, tips acute or rounded-apiculate.

in congested, corymbiform arrays.

in corymbiform-scorpioid arrays.

3.5–4 mm;

pappi fuscous to purplish, outer subulate scales or bristles 20–30, 0.5–3+ mm, intergrading with 35–45+, 5–7+ mm inner subulate scales or bristles.

2.5–3.5 mm;

pappi usually purplish, sometimes stramineous, outer scales 20–25, 0.5–1 mm, contrasting with 35–40+, 4.5–6+ mm inner bristles.

= 34.

= 34.