Flora of North America species comparison

erect to pendent.

petioles 1–6 mm;

blades usually elliptic, lanceolate, lance-ovate, ovate, or suborbiculate, sometimes linear, 4–8(–15) × 1–10(–12) mm, margins entire, irregularly and sparsely serrate, or serrate-lobed.

mostly cauline; often proximally opposite, distally alternate; petiolate or sessile;

blades usually 3-lobed, ultimate margins entire, toothed, or lobed.

10–45(–80) mm.

campanulate.

campanulate, cylindric, funnelform, or hemispheric, 3–15 mm diam.

flat or convex, pitted, epaleate.

0.

0, or (1–)3–18, pistillate, fertile;

corollas cream, yellow, or white (showy or rudimentary).

45–60;

corollas yellow, tubes 1–1.6 mm, throats tubular to subfunnelform, 1.6–2.2 mm, lobes 0.4–0.7 mm.

5–200, bisexual, fertile;

corollas cream, yellow, or white, tubes shorter than or nearly equal to cylindric, funnelform, or campanulate throats, lobes 4, ± deltate (acute; stamens 4; style branches flattened, linear, usually tapering to fine, minutely hairy tips).

14–20, lanceolate to suboblanceolate, 5–6 × 1.3–1.9 mm.

persistent, 5–28 in (1–)2(–3) series (distinct, linear to ovate, equal or subequal, flat or keeled, glabrous or hairy, apices obtuse, acute, or attenuate).

borne singly or (2–3) in loose, corymbiform arrays, 6–9(–10) × 5–6(–8) mm.

radiate or discoid, borne singly or in corymbiform arrays.

narrowly oblanceolate to suboblanceolate, 2.5–3 mm, margins thin-calloused, short-hairy;

pappi 0, or of single bristles.

(black) flattened to subcylindric, linear to oblanceolate or obovate (margins ± calloused and glabrous, hairy, or ciliate, faces usually hairy, sometimes glabrous);

pappi 0, or persistent or falling, of 1–35 bristles plus callous crowns or hyaline scales.

= 17, 19.