Flora of North America species comparison

much branched, pubescent, gland-dotted.

branched from bases, densely white-tomentose.

alternate;

petioles 2–5 mm;

blades 3-nerved from bases, oblong to broadly ovate, 6–15 × 5–9 mm, bases narrowly cuneate, margins irregularly dentate, apices acute to obtuse, faces sparsely pubescent, gland-dotted.

alternate;

petioles 0–2 mm;

blades 3-nerved from bases, ovate, 10–30 × 5–20 mm, bases obtuse to truncate, margins entire or serrulate, apices acute, faces densely white-tomentose, often gland-dotted.

0.5–2.5 mm, glandular-viscid.

30–60 mm, canescent.

cylindric, 6–8 mm.

campanulate, 15–20 mm.

8–14;

corollas pale yellow-green, often purple-tinged, 4.8–5.7 mm.

45–60;

corollas pale yellow or cream, often purple-tinged, 8.5–14 mm.

15–25 in 4–6 series, stramineous, 3–5-striate, unequal, (gland-dotted) margins scarious (apices obtuse to acute);

outer ovate, inner lanceolate.

38–44 in 6–8 series, greenish to purple, 6–9-striate, unequal, margins narrowly scarious-ciliate (faces white tomentose and gland-dotted, apices obtuse to acuminate);

outer ovate, inner lanceolate.

in (leafy) paniculiform or racemiform arrays.

borne singly.

2.5–3 mm, sparsely pubescent or strigose;

pappi of 24–28 tawny, barbellate bristles.

8.5–10 mm, sericeous, gland-dotted;

pappi of 42–44 white, barbellate bristles.

= 18.

= 18.