Flora of North America species comparison

1–3+, erect (straight, brittle), glabrate.

1–3+, erect (straight, rigid, sometimes stout), sparsely scabrellous or glabrescent to glabrate or glabrous.

thin, margins ciliate, abaxial faces glabrous or glabrate, adaxial sparsely strigose;

basal withering by flowering (new rosettes developing at flowering), sessile, blades lanceolate to oblanceolate or spatulate, 20–40+ × 3–5+ mm, bases attenuate, margins sparsely serrate to subentire, strigose-ciliate, apices acute to obtuse;

proximal cauline usually withering by flowering, sessile, blades linear-oblanceolate, ca. 30 × 2 mm, bases tapering, margins entire, scabrous, apices acute;

distal sometimes withering by flowering, sessile, blades linear, 10–30 × 1.5–5 mm, reduced distally, bases cuneate or not tapering, margins entire, apices acute, ± mucronulate.

firm, margins recurved, scabrous to scabrellous, apices acute to acuminate, mucronulate, abaxial faces pilosulous to glabrate or glabrous, midveins marked, adaxial scabridulous;

basal withering by flowering, petiolate (petioles winged, bases sheathing), blades oblanceolate, 26–80 × 6–16 mm, bases attenuate, margins serrate, apices obtuse to acute;

proximal cauline mostly withering by flowering, petiolate to subpetiolate (petioles winged, sheathing to clasping), blades elliptic to oblanceolate or lanceolate or lanceolate-linear to sometimes linear, 45–70+ × 8–15 mm, bases attenuate to cuneate, margins serrate or crenate-serrate or entire;

distal (erect or spreading) sessile, blades lanceolate or oblanceolate to linear, 10–120 × 5–8 mm, reduced distally, sharply so on array branches, bases attenuate to cuneate, margins serrulate or entire.

long, gradually reduced distally on branches, glabrous or glabrate, bracts 3–17+, linear, mucronate.

0.3–6+ cm, irregular in length along branches, sometimes distally reduced, glabrate to sparsely scabridulous, bracts 7–12+, spreading to ascending, abruptly reduced distally, grading into phyllaries.

cylindro-campanulate, (3.2–) 3.4–4 (–4.3) mm.

campanulate to campanulo-turbinate, (4.5–)6–8 mm.

7–14;

corollas usually white, seldom pink, laminae (3–)3.8–5.4(–6.2) × 0.5–1.1 mm.

18–38;

corollas pale lilac or lavender to pale purple, laminae 9–11 × 0.9–1.7 mm.

7–17;

corollas yellow becoming brown, (2.2–)2.5–2.9(–3.1) mm, tubes shorter than narrowly funnelform throats, lobes lanceolate, 0.3–0.6(–0.9) mm.

24–37;

corollas yellow becoming reddish, 4.5–7 mm, tubes shorter than funnelform throats, lobes lanceolate, 0.9–1 mm.

in 3–5 series, oblong-lanceolate, unequal, bases indurate 1/2–3/4, margins narrowly scarious, slightly or not erose, sparsely ciliolate or not distally, green zones lanceolate, apices acute, involute, slightly spreading, faces glabrous.

in 5–6 series, oblong-lanceolate to linear-lanceolate or lanceolate (innermost), strongly unequal, bases indurate 1/2–4/5, margins narrowly scarious, distally erose, hyaline, ciliolate, green zones oblanceolate (outer sometimes ± foliaceous), apices acute (inner sometimes acuminate), mucronate, often purplish tipped, faces glabrous.

in open, wide, paniculiform arrays, branches arching, sometimes ± secund, abundantly bracteate.

in racemiform to usually open, sometimes ± lax, paniculiform arrays, rarely borne singly, branches ascending to spreading, often straggling and arched, ± leafy (each usually with 10+ heads), secondaries sometimes erect and secund-like.

yellowish brown, obovoid, ± compressed, ± 1.2–1.3 mm, 3–4-nerved, faces sparsely to moderately strigillose;

pappi white (yellowish), 2.4–3.3 mm.

tan, oblong-obovoid to fusiform-obovoid, compressed, 2–2.6 mm, 4–6-nerved, faces ± strigillose;

pappi cream, 4.6–6.5 mm.

= 16.

= 64.