Flora of North America species comparison

sparsely to densely puberulent, puberulent-villous, or strigoso-puberulent.

puberulent (at least distally, sometimes glabrous proximally).

basal and proximal cauline 1-nerved, narrowly oblanceolate to spatulate-lanceolate, 90–150(–220) × 4–17(–24) mm, gradually reduced distally to near midstem, then abruptly reduced, linear or narrowly lanceolate, ascending to nearly erect, bractlike, sparsely to densely puberulent, ± gland-dotted.

basal and proximal cauline 1-nerved, elliptic- to oblanceolate-spatulate, 120–300 × 25–50(–55) mm, abruptly, gradually, or little reduced distally, essentially glabrous, weakly, if at all, gland-dotted.

usually (5–)8–15(–30) mm.

usually (ascending) 10–50 mm.

campanulate to turbinate-campanulate, 10–15 × 13–18 mm.

campanulate to turbinate-campanulate, 11–15 × (12–)15–22(–25) mm.

30–70;

corolla tubes glabrous inside.

19–80;

corolla tubes usually pilose inside, sometimes glabrous (Arkansas, Illinois, Missouri).

in (3–)4–5 series, oblong-obovate to oblong-spatulate, strongly unequal, essentially glabrous, margins with (purple) hyaline borders, erose to lacerate or irregular, apices broadly rounded to truncate.

in (3–)4–5 series, (erect or outer sometimes spreading-reflexing) oblong-obovate to broadly obovate (not bullate), unequal, glabrous or minutely puberulent, margins usually with relatively narrow, hyaline borders, apices broadly rounded.

(4–21) in open, racemiform arrays (terminal heads sometimes maturing first and larger).

in racemiform arrays.

5–7 mm;

pappi: lengths ± equaling corollas, bristles barbellate.

4.5–6(–6.5) mm;

pappi: lengths ± equaling corollas, bristles barbellate.

subglobose (often knotty, densely fibrous-rooted).

subglobose.

= 20.