Flora of North America species comparison

hirtellous.

glabrous.

basal and proximal cauline 1-nerved, spatulate-oblanceolate to narrowly oblanceolate, 40–150(–180) × 4–8(–11) mm, abruptly reduced (linear, 1–2 mm wide), then gradually reduced distally, essentially glabrous or hirtellous (sometimes mostly along abaxial midveins), gland-dotted.

basal and proximal cauline 3–5-nerved, linear to linear-oblanceolate, 100–400 × 1–3(–5) mm, gradually reduced distally or abruptly on distal 1/2 of stems, essentially glabrous (bases of basal usually fibrous-persistent).

0.

0.

cylindric, 8–12 × 3.5–5 mm.

cylindro-turbinate, 6–7(–10) × ca. 3 mm.

3–4;

corolla tubes glabrous inside.

(2–)3–4(–5);

corolla tubes glabrous inside.

in 3(–4) series, oblong to oblong-lanceolate, unequal, usually glabrous, rarely minutely puberulent, margins with hyaline borders, apices acute to acuminate.

in 3–4 series, (often purple) oblong-oblanceolate to oblong-lanceolate, unequal, essentially glabrous, margins with hyaline borders, ciliolate, apices (erect or ± appressed) acuminate to acute.

(appressed, overlapping) in dense, spiciform arrays.

in dense, spiciform arrays.

(3–)4–6 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

4–4.5 mm;

pappi: lengths ± equaling corollas, bristles barbellate to subplumose.

globose to elongate.

usually globose to subglobose, sometimes ovoid to elongate.

= 20.

= 20.