Flora of North America species comparison

1–3+, straight, stout, glabrous or sparsely hispid proximally, distally ± hispido-villous.

1, erect, strict (slightly flexuous distally), simple, glabrous, distally ± villosulous (arrays).

basal and cauline, firm, margins entire, strigoso-ciliate, distal also stipitate-glandular, apices mucronate, faces glabrous or glabrescent to ± densely hispid or strigose (then ± scabrous), particularly on veins, midveins sometimes notably hispido-villous, proximally ± sparsely, distally ± densely stipitate-glandular;

basal and proximal cauline long-petiolate (to 100+ mm), petioles ± broadly winged, bases sheathing or auriculate-clasping, blades ovate-lanceolate to narrowly elliptic or oblanceolate, 33–180+ × 11–50 mm, bases attenuate, apices acute or obtuse to rounded;

mid sessile, blades oblong or oblanceolate to oblong-lanceolate, lanceolate, or lance-ovate, 30–140 × 7–27 mm, gradually reduced distally, bases auriculate-clasping, apices usually acute, rarely obtuse;

distal (arrays) narrowly ovate to lanceolate, 9–50 × 3–20 mm.

cauline;

proximal withering by flowering, narrowly winged-petiolate, blades broadly oblanceolate or elliptic to obovate, smaller than mid;

mid and distal winged-petiolate (5–30 mm), broadly elliptic to oblanceolate, (70–)90–140 × 40–50(–60) mm, reduced distally, bases cuneate, with 4–5 pairs of marked veins, margins coarsely serrate (teeth 1–4 mm), slightly revolute, scabrous, apices acuminate;

abaxial faces glabrescent, adaxial sparsely pilose, mainly on veins.

± densely long-stipitate-glandular;

bracts 0(–2), densely stipitate-glandular.

sparsely pilose;

bracts 0–1, foliaceous, remotely serrulate.

campanulate, 8–14 mm, much shorter than pappi.

campanulate, 7–11 mm, shorter than pappi.

8–27;

corollas violet-purple, 10–15 × 1.2–2.2 mm.

10–30;

corollas pale white to pale blue, 10–15 × 1.5–2 mm.

20–50;

corollas pale yellow turning pinkish or purplish, 6–7.8 mm, slightly ampliate, tubes much shorter than cylindric to narrowly funnelform throats, lobes erect, lanceolate, 0.6–0.8 mm.

10–20;

corollas yellow turning pinkish, ca. 4.5–5 mm, tubes longer than funnelform throats, lobes spreading, triangular, ca. 1.5 mm.

25–40 in 3–4 series, inner often purplish, oblong-lanceolate (outer) to linear-lanceolate (inner), ± unequal, membranous, bases pale, indurate, sometimes rounded (outer), distally foliaceous (3/4+ in outer, seldom to base, to 1/5 in inner) and wider than bases, margins narrowly scarious (non-foliaceous parts), purplish (at least inner), ciliate and/or stipitate-glandular (along foliaceous parts), apices squarrose, usually acute, sometimes acuminate, faces densely stipitate-glandular.

32–36 in 4–5 series, broadly oblong, strongly unequal, scarious, dark green zones wide, from 1/2 distally, margins hyaline, narrow, erose, densely ciliate, apices appressed or often slightly squarrose, obtuse to subacute, faces glabrous, eglandular.

3–41+ in elongate, racemo-corymbiform arrays, branches ascending.

1–10, borne singly or in corymbiform arrays.

greenish stramineous, fusiform-obconic, slightly compressed, 4.2–4.7 mm, ribs 7–10, faces ± densely hirtellous;

pappi of stramineous to tawny bristles 7–8 mm, ± equaling disc corollas.

tan, fusiform, cylindric, 5–6 mm, ribs 7–11, stramineous, faces ± strigose;

pappi of pale stramineous (clavate) bristles 5–7 mm, shorter than to ± equaling disc corollas.

= 18.

= 54.