Flora of North America species comparison

mostly basal or basal and cauline; alternate;

petiolate or sessile;

blades deltate to lanceolate overall, usually 1–2-pinnately or palmati-pinnately lobed, lobes usually filiform, ultimate margins entire or toothed, faces glabrous or hairy, often tomentose, usually gland-dotted.

(6–)8–16.

1–4(–6) cm.

obconic to hemispheric.

flat or convex, usually epaleate (paleae scarious, conduplicate, each ± investing subtended floret in H. newberryi).

usually 0, sometimes 8, pistillate, fertile;

corollas white or whitish.

20–30+;

corollas whitish to purplish, 3.5–5 mm, tubes 2.5–3 mm, throats funnelform, 1–1.5 mm, lengths 1–1.5 times lobes.

12–70+, bisexual, fertile;

corollas yellow or whitish to purplish, tubes longer than or about equaling funnelform or abruptly dilated, campanulate throats, lobes 5, ± deltate (reflexed at anthesis);

anther thecae pale;

stigmatic papillae in 2 lines.

usually whitish, sometimes red-tinged, 6–12 × 3–7 mm.

persistent or tardily falling, 5–13+ in 2+ series (distinct, often yellowish, whitish, or purplish, orbiculate to lance-linear, subequal, often ± petaloid, margins usually notably membranous or scarious).

0.

usually discoid, rarely radiate, usually in ± corymbiform arrays.

3.5–4 mm, hirtellous;

pappi 0.3–1(–1.5) mm.

obconic to obpyramidal, usually 4-angled and 12–16-ribbed, glabrous or hairy;

pappi 0 or of 12–22 orbiculate to spatulate scales.

= 34.