Flora of North America species comparison

erect to ascending, striate-angled, glabrous or minutely scurfy, not resinous.

erect, terete, brittle, slightly striate, scabrous, stipitate-glandular, papillose-roughened.

present at flowering (not in fascicles);

petioles to 7 mm;

blades obovate or elliptic to rhombic, 20–60 × 8–40 mm, leathery, bases cuneate to attenuate, margins serrate (teeth 1–3 per side distal to middles, relatively broad), apices acute, faces glabrous, abaxial black gland-dotted (distal reduced, entire), adaxial eglandular.

cauline (proximal withering before flowering, distal crowded in gascicles);

sessile;

blades linear to lanceolate or spatulate, 5–25 × 1–6 mm (stiff, coriaceous to fleshy), bases attenuate, margins sharply serrate (teeth 1–5 pairs, distal leaves often entire), faces glabrous, gland-dotted, resinous.

campanulate to obconic;

staminate 4–5 mm, pistillate 5–6 mm.

campanulate;

staminate 4–5 mm, pistillate 5–6(–7) mm.

15–25;

corollas 3–4 mm.

15–20;

corollas 4–5 mm.

20–30;

corollas 4–5 mm.

15–20;

corollas 4–5 mm.

ovate to lanceolate, 1–4 mm, margins scarious, medians green, apices rounded or obtuse (sometimes purplish).

ovate to lanceolate, 1–5 mm, margins scarious, medians green, apices acute to acuminate, glabrous.

(1–4, sessile or subsessile) in axillary glomerules scattered along branches.

(10–20+ on densely leafy lateral branchlets) in spreading racemiform arrays.

1.5–2 mm, 8–10-nerved, glabrous;

pappi 8–9 mm.

1.8–3 mm, 8–10-nerved, minutely papillose-glandular;

pappi 8–10 mm (bristles rigid).