Flora of North America species comparison

1–5+, erect, spiny, pannose but for glabrescent streaks.

1–5+, erect to spreading (tomentose to pannose or glabrous, often spiny).

primaries forming straight or recurved spines, 5–25 mm;

secondaries spatulate, 10–20 mm, tomentose to nearly glabrous.

(usually with fascicles of secondary leaves in axils of the primary; primaries sometimes becoming spines) cauline; alternate;

sessile (or obscurely petiolate);

blades obscurely palmately nerved (usually 1-nerved), linear to filiform, narrowly lanceolate, or oblanceolate, margins entire, faces glabrous or lanate to tomentose, sometimes glabrescent.

2–12 mm.

turbinate to cylindric, 6–9 mm.

turbinate to cylindric or hemispheric, 3–10+ mm diam.

flat, foveolate, epaleate.

4;

corollas bright yellow, 8–10 mm.

0.

4–9, bisexual, fertile;

corollas cream to bright yellow, tubes longer than funnelform or abruptly dilated throats, lobes 5, recurved, linear to lanceolate;

style branches stigmatic in 2 lines, apices usually truncate to rounded-truncate, sometimes truncate-penicillate (appendages essentially 0).

4, oblong.

persistent, 4–6 in 1–2 series, erect, distinct, mostly oblong to ovate or lanceolate, equal or subequal, margins obscurely scarious.

0.

4–6.

discoid, (1–3) in distil axils or (3–8) in corymbiform clusters.

4–6 mm, densely hirsute;

pappi of 75–100 bristles 9–10 mm.

prismatic to obconic or fusiform, obscurely 5-ribbed, glabrous or hirsute to densely pilose (hairs often obscuring pappi);

pappi 0 or of 70–150 bristles or of 20–30, white to stramineous, subulate to setiform scales.

= 30.

= 60.