Flora of North America species comparison

glabrous or sparsely to moderately pilose distally or throughout.

hispidulous-puberulent.

basal and proximal cauline 1-nerved, narrowly oblanceolate, 60–170(–200) × 2–7(–11) mm, abruptly to gradually reduced distally (becoming linear, spreading-ascending), essentially glabrous or sparsely pilose (abaxially), gland-dotted (proximal margins piloso-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).

0 or (ascending) 1–10(–80) mm.

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

turbinate to campanulate-cylindric, (7–)8–10 × 5–6 mm.

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

(6–)7–12(–13, mostly 9–12 in Del.

(14–)18–24(–30);

corolla tubes pilose inside.

in (3–)4–5(–6) series, oblong, unequal, essentially glabrous, margins with hyaline borders (0.2–0.4 mm wide), erose to lacerate, ciliolate, apices usually rounded, rarely acute.

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 loose to dense, racemiform to spiciform arrays (internodes 1–7 mm).

in loose, spiciform arrays.

(2.5–)3–4 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

(3.5–)4.5–6 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

globose.

globose.

N.J.);

corolla tubes pilose inside.

= 20.

= 20.