Flora of North America species comparison

1–20+, erect, slender, glabrous proximally, hispid distally.

1, erect, glabrous proximal to (and usually into proximal portions of) arrays.

basal and proximal cauline persistent, subpetiolate to sessile, blades sometimes 3-nerved, linear to linear-lanceolate, 60–100 × 7–10 mm, stiff, flat, margins entire or subentire, faces glabrous or sparsely hairy;

mid to distal cauline sessile, blades linear oblanceolate to linear, 20–40 × 3–5 mm, reduced distally, margins entire.

basal and proximal present at flowering, abruptly tapering to winged petioles, blades ovate, 100–200 × 80–120 mm, broadly tapering to truncate or slightly cordate (rarely) bases, margins singly or doubly serrate (teeth 1–3(–6) mm);

mid to distal cauline subsessile to sessile, blades lanceolate, 130–200 × 45–85 mm, progressively reduced distally, margins serrate (teeth 1–3 mm), abaxially glabrous, adaxially scabrous-hispidulous at least along margins.

29–36.5 mm, strigillose;

bracteoles linear.

2–5 mm (4–13 mm on South Carolina plants).

5–6 mm.

campanulate, 4.5–6(–7) mm.

10–20, usually white, rarely pale yellow (conspicuous);

laminae 7–7.3 × 1.4–1.6 mm.

4–6;

laminae 2.2–3.5 × 0.8–1.7 mm.

30–36;

corollas 3.8–4.1 mm, lobes 0.5–0.7 mm.

5–7(–11);

corollas 4–5.6 mm, lobes 1.6–2.5 mm.

in 4–5 series, usually prominently 1-nerved, linear, strongly unequal, outer acute, inner acute to obtuse, glabrous.

(10–18) in 4–6 series, ascending, lanceolate, broadly acute to obtuse, glabrous except for fimbriate-ciliate margins towards tip.

1–25(–50), in corymbiform arrays.

40–70, inconspicuously secund on longer branches, appearing fasciculate on shorter branches, borne in variable arrays, mostly narrow elongate and secund, consisting of axillary and terminal racemiform branches, or wider and compound, consisting of multiple array branches, proximally leafy-bracted, branches and peduncles (2.5–)4(–13) cm, hairy.

(obconic) 1–1.5 mm (ribbed), glabrous;

pappi 3.4–4 mm (apically clavate).

2.5–3.2 mm, short hairy at least on distal half;

pappi 3–4.7 mm.

= 18.

= 90.