Flora of North America species comparison

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

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.

campanulate to obconic;

staminate 4–5 mm, pistillate 5–6 mm.

15–25;

corollas 3–4 mm.

20–30;

corollas 4–5 mm.

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

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

1.5–2 mm, 8–10-nerved, glabrous;

pappi 8–9 mm.