Flora of North America species comparison

1–5, sparsely to moderately strigoso-puberulent.

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

basal petioles 3–5 cm, blades oblanceolate or spatulate to ovate or rotund, 2–4 cm (excluding petioles);

cauline (numerous) subsessile or sessile, blades elliptic or lance-elliptic to ovate, mid mostly 25–50(–65) × 10–25 mm, distal much reduced;

branch leaf petioles 1 mm, blades ovate, 5–15 (excluding petioles) × 2–10 mm.

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.

linear, 1–3 mm, bracteate.

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

narrowly campanulate, 3–5 mm.

narrowly campanulate, 3.5–5 mm.

0(–2).

3–4(–6);

laminae 1.4–2.5 × 0.4–0.9 mm.

4–8;

corollas 3 mm, lobes 1 mm.

3–5;

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

in 3–4 series, lanceolate, strongly unequal, margins ciliate, apices acute, glabrous.

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

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

75–200 in open paniculiform arrays, branches divaricate, ascending to recurved, weakly to strongly secund, to 50 cm, secondary branches less than 3 cm.

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

2.5–3 mm, moderately short-strigose;

pappi 2 mm.

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

pappi 2.4–3 mm.

= 18.