Flora of North America species comparison

1–10(–20+), erect or ascending, glabrous throughout or hairy in arrays.

usually single, glabrous proximally, hirsuto-puberulent in arrays, sometimes irregularly or decurrently so proximally.

rosettes present at flowering;

basal and proximal cauline tapering to long, winged petioles sheathing stems or nearly so, blades narrowly ovate to oblanceolate, 100–400 × 10–60 mm, thick or fleshy, entire, acute, glabrous;

mid to distal cauline usually numerous, sessile, blades lanceolate, 40–60 × 5–10 mm, reduced distally, thick or fleshy, bases sometimes subclasping, margins entire.

proximalmost withering, smaller;

basal and proximal cauline tapering to winged petioles, blades elliptic to elliptic-obovate or subrhombic, mostly 60–150 × 10–50 mm, margins serrate, usually acuminate, glabrous or scabrellous distally;

mid and distal cauline sessile, blades mostly rhombic-elliptic to narrowly lanceolate, 20–40 × 5–8 mm.

2–3 mm, glabrous or sparsely hairy.

1–4 mm, bracteolate.

3–7 mm.

campanulate, 4–6 mm.

8–17;

laminae 5–6.2 × 0.4–0.6 mm.

6–9;

laminae 2–3 × 1–1.5 mm.

10–22;

corollas 3–3.2 mm, lobes 0.5–1.2 mm.

mostly 8–12;

corollas 4–4.5 mm, lobes 1–1.5 mm.

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

in 3–4 series, appressed, unequal (outer 1/2 length of inner), linear to lanceolate-deltate (inner series usually striate with 2 prominent secondary nerves), apices narrowly acute or minutely obtuse.

20–500, secund, in paniculiform arrays, secund-pyramidal to broadly club-shaped, sometimes leafy proximally, at least proximal branches spreading-recurved, branches and peduncles bracteolate, bracteoles reduced distally.

50–250, in elongate, narrowly paniculiform arrays, leafy-bracteate proximally, not secund, proximal branches sometimes elongated and ascending.

(obconic) 1.1–1.5 mm, moderately strigose;

pappi 3.8–4 mm (slightly clavate).

(tan) 1.75–2.5 mm, usually glabrous, sometimes sparsely strigose;

pappi 1.5–2.5 mm.

= 18.