Flora of North America species comparison

1(–7), branched distally, strongly winged, sparsely to densely hairy proximally, moderately to densely hairy distally.

usually moderately to densely hairy, sometimes glabrous;

basal blades (withered by flowering) lanceolate, oblanceolate, or obovate, entire or weakly lobed;

proximal and mid blades obovate to oblanceolate, usually dentate or entire;

distal blades oblanceolate to lanceolate, entire or dentate.

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.

3–10 cm, moderately to densely hairy.

globoid, 8–20 × 8–23 mm.

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

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).

8–21, pistillate, fertile;

corollas yellow, 10–23 × 4–10 mm.

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.

200–400(–800+);

corollas yellow proximally, yellow to yellow-brown distally, 2.4–4 mm, lobes 5.

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.

(connate proximally) moderately to densely hairy.

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.

5–70(–100+) per plant, in paniculiform arrays.

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

1–2 mm, sparsely to moderately hairy;

pappi of 5–7 entire, aristate scales (0.5–)0.9–1.5(–1.8) mm.

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).

= 32, 34, 36.