Flora of North America species comparison

1–20+, erect, proximally sparsely to moderately strigoso-villous, distally usually moderately to densely so.

1–5+, erect to arching, puberulent in arrays and in lines proximal to leaf bases or uniformly.

basal 0;

proximal cauline sessile, blades narrowly to broadly oblanceolate, 35–75(–100) × (6–)7.5–14(–20) mm, proximal much smaller, tapering to bases, margins subentire or finely serrulate to coarsely, sharply serrate (teeth 0–9 per side), ciliate, 3-nerved, sometimes obscurely so, apices acute, abaxial faces glabrate to sparsely short-strigose, adaxial glabrous;

mid to distal cauline sessile, blades oblanceolate, becoming lanceolate distally, 20–60 × 4–8(–11) mm, largest near mid stem, somewhat to much reduced distally, margins entire or finely serrulate, rarely serrate (teeth 1–8 per side), usually becoming entire to sparsely serrulate distally, ciliate, apices acute, faces glabrous or sparsely strigoso-villous, more so along abaxial nerves.

usually anise-scented when crushed;

basal and proximal usually withering by flowering, tapering to broadly winged petioles, blades oblanceolate, margins entire, short-strigillose, faces glabrous or short scabroso-strigillose along main nerves;

mid and distal cauline sessile, blades lanceolate to linear-lanceolate or narrowly ovate, 30–110 × 8–20 mm, much reduced distally, bases rounded, margins entire, midnerves prominent, sometimes scabroso-strigillose basally to much of length, apices acute, faces glabrous, finely translucent gland-dotted.

2–7 mm, sparsely to moderately short strigoso-villous;

bracteoles 1–3, linear, rarely minutely stipitate-glandular.

thin, 2–8 mm, glabrate to finely puberulent, glabrous strips proximal to few linear-lanceolate bracteoles.

narrowly campanulate, 2.5–3.5(–4) mm.

narrowly campanulate, 3.5–5 mm.

(8–)11–15(–17);

laminae 1–2.5 × 0.1–0.4(–0.7) mm.

3–4(–6);

laminae 1.4–2.5 × 0.4–0.9 mm.

(3–)5–11(–16);

corollas 2.6–3.7(–4) mm, lobes 0.5–1.2 mm.

3–5;

corollas 2.7–3.5 mm, lobes 0.5–1.3 mm.

in 3–4 series, strongly unequal, margins sparsely long ciliate, acute, faces glabrous, rarely sparsely minutely stipitate-glandular;

outer lanceolate, inner linear-lanceolate.

in 3–4 series, strongly unequal, yellowish, acute, glabrous;

outer narrowly ovate to lanceolate, inner lanceolate to linear-lanceolate.

12–500+, sometimes secund, in short to long, thyrsiform or narrowly secund-pyramidal paniculiform arrays, usually congested, club-shaped to rarely wand-shaped, (2.5–) 10–20 × (2–)4–8(–10) cm, branches usually ascending or sometimes arching spreading.

(20–)75–350, in paniculiform arrays, openly secund, pyramidal, proximal to mid branches ascending to spreading, recurved, secund, 3–18 cm.

(narrowly obconic) 1–1.5 mm, sparsely to moderately strigose;

pappi 2.5–3.3 mm.

(obconic) 1.4–2.3 mm, strigose to glabrate;

pappi 2.4–3 mm.

= 18, 36.