Flora of North America species comparison

1–50+, decumbent to erect (sometimes brown or reddish brown, sometimes whitish distally, sometimes ± brittle), sparsely to densely hispido-strigose, sparsely to abundantly long-hispid, eglandular or sparsely to densely stipitate-glandular.

ascending to erect (sometimes ± brittle, sometimes brown), glabrate to densely hispid or densely stipitate-andular (axillary leaf fascicles sometimes present).

generally not crowded;

proximal cauline petiolate, blades oblanceolate, (90–)220–400(–600) × (2–)4–8(–13) mm, bases cuneate, margins flat, usually entire, rarely with 1–2 apical teeth, strigoso-ciliate, sparsely to abundantly long-hispido-strigose proximally, apices acute to obtuse, sometimes mucronate, faces sparsely to densely hispido-strigose, eglandular or sparsely to densely stipitate-glandular;

distal sessile, blades usually lanceolate or oblanceolate to oblong, rarely ovate or lanceolate-triangular, (4–)15–28(–42) × (1.5–)3.5–7(–12.5) mm, bases attenuate to convex-cuneate to rounded, margins usually flat, rarely remotely undulate, strigoso-ciliate, sparsely to abundantly long-hispido-strigose proximally, apices acute to obtuse, sometimes mucronate, faces sparsely to densely hispido-strigose, eglandular or sparsely to densely stipitate-glandular.

basal and proximal cauline withering by flowering;

sessile;

mid and distal blades ovate to linear-lanceolate, 12–50 × 4–40 mm, rounded to very weakly clasping, margins flat, strigoso-ciliate, apices acute, faces glabrate to densely hairy and/or stipitate-glandular;

branch leaves reduced.

(4–)15–41(–98) mm, sparsely to densely hispido-canescent, eglandular or sparsely to densely stipitate-glandular;

bracts 1–7+, usually linear-oblanceolate, rarely leaflike and linear-oblanceolate, usually greatly reduced, margins usually flat, rarely remotely undulate, strigoso-ciliate, sparsely to abundantly long-hispido-strigose proximally, apices acute, sometimes mucronate, faces sparsely to densely hispido-strigose, eglandular or sparsely to densely stipitate-glandular; rarely 1–2 leaflike, oblanceolate bracts subtending heads.

5–50 mm, sparsely to densely hispid, stipitate-glandular;

bracts linear to narrowly lanceolate, 3–9 × 0.5–2 mm.

narrowly cylindric to campanulate, (5–)6–9.5(–13) mm.

turbino-cylindric, 7.5–14 mm.

(5–)10–20(–38);

laminae (3.5–)6.5–11(–20) × 1–2(–3) mm.

0.

(10–)20–50(–85);

corollas barely ampliate, (4–)5–6(–8) mm, glabrous or glabrate (few, minute hairs), lobes 0.4–0.75(–1) mm, glabrous or glabrate (hairs 0.1–0.35 mm).

(14–)20–45(–60);

corollas ± ampliate, (7.5–)8.5–11(–14) mm, throats and lobes sparsely short-pilose, lobes 0.4–0.9 mm (margins thickened).

in 4–5 series, lanceolate to linear-lanceolate or triangular-lancelate, unequal (outer 1/5–1/3 length of inner), margins scarious, sometimes reddish purple distally, ciliate distally or apically, faces sparsely to densely strigose, eglandular or sparsely to moderately stipitate-glandular.

in 5–7 series, outer ovate to deltate (2–5 × 0.6–1.7 mm), inner lanceolate, unequal, abaxial faces sparsely to densely hispid or stipitate-glandular (in green zone).

1–16(–42), in usually open, corymbiform, rarely paniculiform arrays.

(discoid) 1–15 per branch, in corymbiform, openly paniculiform, or racemiform arrays.

monomorphic, obconic, compressed, 1.7–2.7(–3.4) mm, ribs 4–8(–10) (rarely brownish), faces sparsely to moderately strigose;

pappi off-white, outer of linear scales 0.25–1 mm, inner of 30–45 bristle (4–)5–6.5(–8.5) mm, longest weakly clavate (usually equaling or longer than corollas).

monomorphic, obconic, compressed, 2–5 × 0.35–1.6 mm, ribs 5–10, faces sparsely strigose;

pappi tan, outer of linear scales 0.1–0.5 mm (not obvious), inner of 30–40 bristles 4.5–6.4, longest weakly clavate.

= 18, 36.

= 18.