Flora of North America species comparison

branched.

diffusely branched.

blades linear, 10–35(–55) × 1(–3) mm.

blades spatulate to linear-oblanceolate, 5–15(–25) × 1–3 mm.

turbinate.

campanulate.

14–52;

corollas yellow to brownish orange, laminae 3–12 mm.

7–12;

corollas yellow, laminae ca. 5 mm.

30–90;

corollas yellow, narrowly funnelform, not contracted at lobes, lobes 5.

10–23;

corollas yellow, narrowly funnelform, not contracted at lobes, lobes 5.

in 4–5-series, ovate-elliptic to oblong-elliptic, usually glabrous, rarely sparsely short-strigose.

in 2(–3) series, elliptic to obovate, glabrous.

of 5(–8) bristles, prominently dilated at bases.

of (8–)15–20 bristles, not dilated at base.

= 18.

= 18.