Flora of North America species comparison

branched.

diffusely branched.

blades linear to narrowly elliptic or oblanceolate, 20–50 × 3–6 mm.

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

campanulate.

campanulate.

17–42;

corollas yellow, laminae 3–8 mm.

7–12;

corollas yellow, laminae ca. 5 mm.

21–91;

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

10–23;

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

in 2–3 series, narrowly lanceolate, sparsely hirsuto-pilose.

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

of 8–12 bristles, weakly dilated at bases.

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

= 18.

= 18.