Flora of North America species comparison

1(–10), erect, simple or branched distally (usually ± winged by decurrent leaf bases), glabrous or sparsely to densely hairy.

usually mostly cauline; mostly alternate (proximal sometimes opposite);

petiolate or sessile;

blades mostly elliptic, lanceolate, linear, oblanceolate, oblong, ovate, or spatulate, often pinnately lobed or pinnatifid, ultimate margins entire or toothed, faces glabrous or sparsely to densely hairy, gland-dotted.

basal, basal and cauline, or cauline; alternate;

petiolate or sessile;

blades mostly elliptic, filiform, lanceolate, linear, oblong, ovate, or spatulate, often 1–2-pinnately or -ternately lobed, ultimate margins entire or toothed, faces glabrous or hairy, usually gland-dotted.

± globose, hemispheric, obconic, or ovoid, 4–34 mm diam.

mostly campanulate, cylindric, hemispheric, obconic, or ± rotate.

conic, ± globose, hemispheric, or ovoid, pitted (glabrous), epaleate (rarely bearing setiform enations).

mostly conic, convex, flat, globose, hemispheric, or ovoid, epaleate (smooth or slightly to deeply pitted, sometimes with setiform enations, sometimes gland-dotted; outer disc florets rarely subtended by paleae in Amblyolepis).

0 or 7–34, pistillate and fertile or neuter;

corollas yellow, yellow with purple streaks, reddish brown to red proximally and yellow distally, or reddish brown to red or purple throughout.

0, or 1–55 (in 1–3 series), pistillate and fertile, or styliferous and sterile, or neuter;

corollas mostly yellow to orange, sometimes wholly or partly purple, red-brown, or reddish.

75–1000+, bisexual, fertile;

corollas yellow, purple, or yellow to yellow-green proximally and yellow-brown, brown or reddish brown to purple distally, tubes shorter than throats, lobes 4 or 5, ± deltate (style-branch apices penicillate or truncate).

5–250+, usually bisexual and fertile, rarely functionally staminate;

corollas yellow, orange, or wholly or partly purple, red-brown, or reddish, tubes much shorter than to about equaling slightly to abruptly and greatly dilated, funnelform to campanulate or urceolate throats, lobes 5, deltate to lance-deltate (equal or unequal, often attenuate, glabrous, papillate, or hairy, hairs sometimes moniliform);

anther thecae pale;

stigmatic papillae in 2 lines.

persistent, 9–34(–40+) in (1–)2[–3] series (distinct or proximally connate, usually reflexed in fruit, glabrous or sparsely to densely hairy, gland-dotted).

persistent, 5–50+ in 2–3+ series, distinct or outer connate, mostly elliptic, lanceolate, linear, oblanceolate, oblong, or ovate, subequal or unequal (erect or reflexed in fruit, usually herbaceous to scarious, margins seldom scarious).

0.

radiate or discoid, borne singly or (2–300+) in paniculiform to corymbiform arrays.

mostly radiate or discoid (rarely radiant), usually borne singly, sometimes in glomerules or corymbiform arrays.

mostly obpyramidal, 4–5-angled, glabrous or sparsely to densely hairy;

pappi persistent, of 5–12 entire or ± lacerate, sometimes aristate scales.

usually obpyramidal, sometimes clavate, columnar, or obconic (lengths usually 1–2.5, rarely to 3.5 diams.), mostly densely and shaggily hairy, sometimes sparsely hairy or glabrate;

pappi usually persistent, of 2–12 scales, sometimes 0 or of 35–150 bristles (Psathyrotes).

= 17.