Flora of North America species comparison

glabrous.

(often purplish-tinged) glabrous or sparsely and unevenly hairy, especially near leaf axils and among heads, usually glabrescent.

1–(2–4).

single or loosely clustered.

(thickish-turgid) progressively reduced distally; petiolate;

blades broadly lanceolate to subelliptic, 2.5–15 × 1–5 cm, bases tapered, margins sharply dentate to subentire (some teeth callous; mid leaves sometimes larger than proximal; distal leaves sessile, smaller, often clasping).

usually progressively reduced distally (basal sometimes smaller than proximal or mid leaves); petiolate (petioles shorter than to equaling blades, often clasping);

blades broadly lanceolate or lanceolate to oblanceolate, (5–)10–20+ × 2–4(–5+) cm, bases tapered, margins dentate to denticulate (distal leaves smaller, bractlike).

± 8 or ± 13;

corolla laminae 5–12 mm.

usually ± 13, sometimes fewer;

corolla laminae (10–)15–25 mm.

(± 8) ± 13 or ± 21, 5–9 mm, tips black (villous).

± 13 or ± 21, tips often black or brownish (sometimes with scattered black hairs).

of (1–)3–6 linear to filiform bractlets (lengths to 1/3 phyllaries).

of 2–5+ linear to filiform bractlets (lengths to 1/2 phyllaries).

(1–)4–12 in corymbiform arrays.

nodding, 1–5(–10).

glabrous.

glabrous.

= 40.

= 40, ca. 175–180.