Flora of North America species comparison

1–5+, ascending to erect (straight, stout), glabrate to hirsuto-hispid or pilose, sometimes glabrous or hairy in lines (var. pringlei).

1–10+, ascending to erect or decumbent, light to dark brown, proximally glabrous, distally hispiduloso-hirsute or hirtellous, stipitate-glandular.

thin, margins ciliate, apices acute to acuminate, mucronate, faces glabrous or ± hirsute (particularly on abaxial midveins);

basal withering by flowering (new vernal rosettes developing at flowering), petiolate to subpetiolate (petioles winged, ciliate, bases sheathing), blades oblanceolate or obovate to spatulate, 10–60 × 5–15 mm, bases attenuate, margins sparsely crenate-serrate (mostly apically), apices obtuse to rounded;

proximal cauline usually deciduous at flowering (often with axillary clusters of small leaves), petiolate or subpetiolate to subsessile (petioles narrowly to broadly winged, clasping), blades elliptic-oblanceolate or -oblong to linear-lanceolate or -oblanceolate, 40–102 × 5–25 mm, progressively reduced distally, bases attenuate to cuneate, ± clasping, margins entire to serrate, softly ciliate, apices attenuate, hyaline-spinulose;

distal sessile, blades lance-oblong to linear-lanceolate to linear or linear-oblanceolate or linear-subulate, 10–100 × 1–8 mm, progressively reduced distally, branch leaves abruptly smaller, bases cuneate, margins entire or serrulate.

(yellowish to dark green) thin, margins entire;

basal sometimes persistent, sessile, blades (3-nerved) oblanceolate to spatulate, 20–50(–70) × 5–15 mm, margins entire (remotely serrate), coarsely ciliate, apices rounded, short-mucronate, faces usually hirsute, rarely glabrous, often also stipitate-glandular;

proximal cauline sessile (often with clusters of smaller leaves in axils), blades oblong or linear-lanceolate, (15–)30–100 × 5–15(–20) mm, bases rounded or slightly clasping, margins scabrellous, apices acute to obtuse, spinulose-mucronate, abaxial faces scabrous, often stipitate-glandular, adaxial hirsute;

distal sessile, blades lanceolate to oblong, 20–80 × 2–10(–20) mm, greatly reduced distally, bases cuneate to subclasping, margins ciliate, stipitate-glandular, apices acute to obtuse, white-mucronate, faces moderately strigose, moderately to densely stipitate-glandular.

5–30(–50) mm, progressively shorter distally, glabrous or densely hispid, bracts 7–25+, appressed to ascending, sometimes ± spreading, linear to subulate, glabrate, ciliate or not, mucronate to apiculate, ± grading into phyllaries.

0.5–5 cm, hispid, stipitate-glandular, bracts dense, spreading or squarrose (rarely ascending), linear to narrowly oblong, 3–8 mm, grading into phyllaries, spinulose, short-strigose.

campanulate to cylindro-campanulate, (2.5–)3.5–5.1(–6.5) mm.

campanulate, (5–)7–9 mm.

(10–)16–28(–38);

corollas usually white, rarely pinkish or bluish, laminae (4–)5.4–7.5(–11) × (0.4–)0.8–1.3(–1.7) mm.

(10–)25–35;

corollas light to dark rose-purple, lavender to deep purple, laminae 9–13(–15) × 1–2 mm.

(13–)17–39(–67);

corollas light yellow becoming reddish purple or brown, (2.5–)3–4.1(–5.5) mm, tubes much shorter than narrowly funnelform throats, lobes lanceolate, (0.4–)0.6–0.8(–1) mm.

(25–)30–40(–50);

corollas yellow turning brown or reddish purple, 4.5–5.5(–6) mm, tubes 1/2 the funnelform to nearly tubular throats, lobes triangular, 0.4–0.7 mm.

in 4–6 series, appressed or slightly spreading, oblong-lanceolate (outer) to linear (innermost) , unequal (rarely subequal), bases indurate 1/2–3/5, margins hyaline, scarious, erose, ± ciliolate distally, green zones lanceolate to lance-rhombic, apices acute or acuminate, involute, spinulose, faces glabrous or sparsely hirsutulous.

in 4–5(–6) series, outer oblanceolate, mid linear-lanceolate, inner linear, usually unequal, sometimes subequal, bases ± indurate, margins hyaline, scarious, erose, ciliate or ciliolate and/or stipitate-glandular, green zones often broadly foliaceous (outer), green in distal 1/3–1/2 (mid), apices spreading to reflexed (outer), acute, mid long-acuminate, faces moderately hairy, stipitate-glandular.

in open, leafy, often pyramidal, paniculiform arrays, branches divaricate or branches 10 cm or less ascending, often arched and secund, sometimes racemiform.

in ample, corymbiform to diffusely paniculiform arrays, branches initially patent, then ascending (often from proximal nodes).

whitish or gray, oblong-obovoid, sometimes ± compressed, 1–1.5 × 0.5–0.7 mm, 4–6-nerved, faces sparsely strigillose;

pappi white, 3.5–4 mm.

dull purple or brown (nerves stramineous), obovoid, slightly falcate, not compressed, 2–2.5 mm, 7–10-nerved, faces sparsely strigillose or sericeous;

pappi tawny (barb tips sometimes rose-tinged), 3.5–6 mm.

= 10, 20.