Flora of North America species comparison

1–5+, loosely erect, densely long-stipitate-glandular.

1–20+, erect, branched, straight to ± flexuous, long- and short-stipitate-glandular, more densely so distally.

mostly basal and cauline, basal and proximal cauline tufted, often marcescent; petiolate to sessile (distal), petioles 10–32 mm, bases sheathing;

blades oblanceolate to spatulate, 10–80(–120) × 15(–20) mm, progressively reduced distally, thick, firm, bases ± attenuate, margins entire or irregularly serrate, eciliate, teeth apiculate to ± spinulose, apices obtuse to acute, mucronate-indurate or callous, faces glabrous.

cauline, proximal reduced and deciduous by flowering, coriaceous, rigid;

sessile;

blades oblong to oblong-ovate or ovate to nearly orbiculate, 10–45 × 4–30 mm, gradually reduced distally, bases cordate-clasping, main veins marked, margins sharply spinulose-serrate, scabridulous, short-stipitate-glandular, apices acute to obtuse, mucronate, faces scabrellous, ± short-stipitate-glandular.

stipitate-glandular [bracts not observed].

0.3–4 cm, densely stipitate-glandular;

bracts 0–3, often proximal to heads and appearing to be part of involucres, foliaceous, margins entire or ± serrate.

hemispheric-campanulate, 8–12 mm.

campanulate, 8.5–12 mm.

13–27;

corollas white to lavender, 8–17(–20) × 1.7–2.2(–3) mm.

17–20;

laminae purple, 15–22 × 1.2–2 mm.

29–47;

corollas pale yellow, 5.5–(6–8) mm, barely ampliate, tubes 2.6–2.9 mm, slightly longer than funnelform throats 1.9–2.3 mm, lobes erect to spreading, lanceolate, 0.8–1 mm.

ca. 29;

corollas yellow turning purplish, barely ampliate, ca. 8.2 mm, tubes shorter than funnelform throats (ca. 2.5 mm), lobes erect to spreading, triangular, 0.6–0.8 mm.

in 4–5 series, often partly purplish (especially inner), ± keeled, lanceolate to linear-lanceolate, margins narrowly scarious, erose, sometimes stipitate-glandular (particularly on green parts), green zones 1/2–2/3 distal portions and full width (outer) to less than 1/6 and along midveins (inner), apices acute to long-acuminate, squarrose (outer and mid) to appressed (inner), faces glabrous, stipitate-glandular (green parts).

(ca. 40) in 5–6 series, spreading, sometimes purplish tinged (inner or bases of outer), keeled, linear-lanceolate to oblanceolate, lance-oblong, or lanceolate, coriaceous, margins narrowly scarious, hyaline, sometimes purplish distally (inner), erose, short-stipitate-glandular along foliaceous distal parts, apices acute and spinulose to long-cuminate (innermost), often purplish-margined, faces short-stipitate-glandular;

outer apically broadly foliaceous 1/3–9/10 (foliaceous part often wider than base), inner usually narrowly foliaceous 1/3 or less, sometimes green parts lanceolate apically along midnerves or none.

1–5, borne singly or in ± corymbiform arrays.

1–30+ in open corymbiform arrays or borne singly at ends of long, leafy branches.

brown, fusiform, slightly compressed, 2.5–3.5 mm, 8–10-nerved, faces ± densely strigillose;

pappi of yellowish bristles ca. 6 mm.

brown, fusiform, ± compressed [mature size not available], ribs 7–10, glabrous;

pappi of (ca. 40) tawny bristles 7–7.5 mm.

= 18.