Flora of North America species comparison

erect, ascending, procumbent or decumbent, simple or branched, glabrous or woolly, arachnoid (in C. mariana), often densely stipitate-glandular, especially distally.

1–8(–20), usually ascending to erect, moderately spreading near base, rarely decumbent, frequently branched (densely leafy), sparsely lanate, stipitate-glandular distally.

basal (in rosettes) and cauline; alternate;

sessile;

basal blades 1-nerved (net-veined), spatulate to oblanceolate (bases petiole-like), margins entire or apically dentate-serrate, faces usually sparsely to densely woolly (at least in young rosettes) or piloso-sericeous, rarely arachnoid;

cauline blades linear, lanceolate, elliptic, or ovate (bases sometimes ± clasping), margins entire or dentate, sometimes coarsely ciliate, faces glabrous or densely woolly, pilose, or arachnoid, or stipitate-glandular.

basal blades usually spatulate to oblanceolate, rarely obovate, (35–)55–120(–150) × 15–20(–30) mm, bases narrowly attenuate-cuneate, margins entire or apically serrate-denticulate, faces loosely long-lanate, obscurely stipitate-glandular, viscid;

cauline sessile, blades usually oblong to oblong-elliptic, sometimes ovate to lanceolate, bases usually slightly auriculate-clasping, truncate to rounded, margins undulate, some cilia 2–3 mm, faces moderately woolly-lanulate, stipitate-glandular;

mid to distal leaves ascending, often appressed, apices usually obtuse, sometimes subacute, mucronate or mucronulate, faces stipitate-glandular, distalmost glabrate to sparsely woolly-pilose, densely stipitae-glandular.

campanulate, (5–12 ×) 5.5–14 mm.

(yellow-green in bud) cylindro-campanulate, 6–8.5 mm.

slightly convex, shallowly pitted, epaleate.

9–36, pistillate, fertile;

corollas yellow.

16–22;

laminae 8–9.5 × 1–2 mm.

25–90, bisexual, fertile;

corollas yellow, ampliate, tubes ± equaling distally dilated throats, lobes 5, erect, triangular;

style-branch appendages triangular.

20–40;

corollas 4.5–5.5 mm, lobes 0.6–1 mm.

30–55 in 3–5 series, 1-nerved, (weakly to strongly keeled proximally, flat to slightly convex distally), linear-lanceolate to oblanceolate, unequal, chartaceous to membranous proximally, membranous or foliaceous distally, margins scarious proximally, faces glabrous or hairy, sometimes stipitate-glandular or gland-dotted.

in 5–6 series, erect, linear-lanceolate, unequal, 0.7–1.1 mm wide, apices usually acute-acuminate, sometimes acute-aristate, sometimes inner obtuse to rounded, densely stipitate-glandular, viscid.

in corymbiform, subumbelliform, or paniculiform arrays (peduncles nearly naked to leafy-bracteate).

10–50, in compact corymbiform to paniculiform arrays (height usually less than 1/5 plants, branches slender, ascending, stipitate-glandular, sweet camphor smelling).

(stramineous) obconic, compressed, usually smooth or shallowly 1–10-ribbed, sometimes 2–10-ridged (ridges yellow to red-brown, clavate, translucent), faces sparsely to moderately strigose;

pappi persistent, in (2–)3(–4) series, outer of linear to narrowly triangular scales 0.4–1.4 mm, inner 1–2(–3) series of 20–40 whitish to stramineous, thin, barbellate, apically attenuate or clavate bristles.

2–2.7 mm, without ridges, shallowly ribbed or smooth, moderately long-strigose;

pappi in 3–4 series, outer of linear scales 0.5–1.5 mm, inner of 30–35 bristles 5–6 mm, inner moderately clavate.

= 5, 4, 9.

= 10.