Flora of North America species comparison

glabrous or sparsely pilose.

hispidulous-puberulent.

basal and proximal cauline (arising from separated nodes) 1-nerved, linear to linear-lanceolate, 100–300 × 1–2(–2.5) mm, gradually or abruptly reduced distally, essentially glabrous, gland-dotted (proximal margins sometimes ciliate).

basal (usually withering before flowering) and proximal cauline 1-nerved, broadly oblanceolate to elliptic- or lanceolate-spatulate to linear-lanceolate, 80–250 × (4–)6–25 mm, gradually or abruptly reduced distally, essentially glabrous or sparsely or densely puberulent-hispidulous, ± gland-dotted (distal especially).

(ascending) 1–7 mm.

0 or (ascending to spreading or deflexed) 1–5(–10) mm.

turbinate-campanulate, 5–7 × 4–5 mm.

campanulate-hemispheric to turbinate-campanulate, (9–)10–16 × 10–20 mm.

4–6;

corolla tubes glabrous inside.

(14–)18–24(–30);

corolla tubes pilose inside.

in 2–3(–4) series, lanceolate to oblong or elliptic-oblong, unequal, essentially glabrous, margins with (pinkish purple) hyaline borders, apices usually rounded-retuse and minutely involute-cuspidate to apiculate.

usually in 4–5 series, (outer or outer and middle usually reflexed) broadly obovate to oblong-spatulate, unequal, essentially glabrous, margins with relatively broad, whitish-hyaline, irregular to erose or lacerate borders (especially on the distal 1/3), strongly bullate (with a sharp, low, rounded buttress delimiting the hyaline border), apices usually rounded to subtruncate.

in compact, racemiform arrays.

in loose, spiciform arrays.

2.5–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

(3.5–)4.5–6 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose.

globose.

= 20.