Flora of North America species comparison

glabrous.

minutely scabro-hirtellous.

basal absent at flowering;

cauline blades 1-nerved, linear to filiform, 0.5–1 mm wide, reduced distally.

basal persistent at flowering;

cauline blades mostly 3- or 5-nerved, linear-spatulate to linear, proximal 1–3(–4) mm wide, narrower distally.

narrowly campanulate (lengths ± equaling diams.), 3–4 mm diam.

broadly turbinate to obconic, 4–7 mm diam.

4–9;

corollas yellow, 2.3–4(–5.4) mm.

(4–)5–10;

corollas yellow, 5–8(–10) mm.

(8–)10–12(–17).

15–23 (bisexual and fertile or functionally staminate).

borne singly or (sessile in glomerate clusters of 3–5) in loose arrays.

borne singly or (2–4) in loose arrays.

1–1.2 mm, faces densely strigoso-sericeous (hairs ± twisted, apically attenuate);

pappi of 1–2 series of oblanceolate scales 0.5–1 mm.

1.5–3(–3.5) mm, faces without oil cavities, loosely strigose (hair apices acute);

pappi of 1–2 series of scales (0.5–)1–2.2 mm.

apices flat.

apices flat, ± swollen.

= 8.

= 8.