Flora of North America species comparison

(sometimes in 3s or 4s) sessile;

blades obovate or elliptic to lanceolate or linear, (20–)50–100(–160+) × (5–)10–25(–40+) mm, bases cuneate to rounded, margins usually coarsely dentate to serrate, sometimes ciliate, apices acute to acuminate, faces glabrous.

(rarely in 3s) sessile;

blades lance-ovate or oblanceolate to lanceolate or linear, 40–100(–200+) × (2–)5–25(–45+) mm, bases cuneate to rounded, margins usually coarsely dentate to serrate, sometimes entire, sometimes ciliate, apices acute to acuminate, faces glabrous.

(10–)20–60 mm.

10–40(–100+) mm.

turbinate to hemispheric or broader, (4–)6–8(–10+) × 8–12+ mm.

± hemispheric or broader, (3–)6–10 × (8–)12–20+ mm.

usually 7–8, rarely 0;

laminae orange-yellow, (10–)15–25(–30) mm.

usually 6–8, sometimes 0;

laminae orange-yellow, 2–15(–18) mm.

(25–)60–100(–150+);

corollas yellow to orange-yellow, 3–6.5 mm.

(10–)40–100(–150+);

corollas orange-yellow, 3–4 mm.

8–12, ovate or obovate to lance-oblong, (4–)6–8(–10+) mm (tips often orange to purplish, as are tips of paleae).

6–8+, ovate or lance-ovate to lanceolate, 2–10 mm.

of 5–7(–9+) erect or spreading to reflexed, oblanceolate or lanceolate to linear, often foliaceous bractlets or bracts (6–)10–12(–20+) mm, margins usually ciliate, abaxial faces glabrous or bases hispidulous.

of (3–)5–8(–10) spreading to reflexed, oblong to lance-linear, often ± foliaceous bractlets or bracts (3–)8–12(–25+) mm, margins usually ciliate, abaxial faces usually glabrous, bases sometimes hispidulous.

(erect at flowering, sometimes nodding in fruit) borne singly or in open, ± corymbiform arrays.

(erect or nodding at flowering, usually nodding in fruit) borne singly or in open, ± corymbiform arrays.

blackish, red-brown, or stramineous, obcompressed, flattened or unequally 3–4-angled, ± cuneate, outer 6–8 mm, inner 8–10 mm, margins retrorsely ciliate or barbed, apices ± truncate to convex, faces ± 1-nerved, ± striate, glabrous;

pappi of 2–4 ± erect, retrorsely barbed awns 3–5 mm.

blackish or brown, usually ± flattened, sometimes ± 4-angled, ± cuneate, outer (3–)5–6+ mm, inner 4–8 mm, margins (± thickened or winged) retrorsely ciliate, apices ± truncate to convex, faces ± striate, glabrous or tuberculo-strigillose;

pappi of (2–)4, ± erect, retrorsely barbed awns (1–)2–4 mm.

= 22, 24.

= 24, 48.