Flora of North America species comparison

glabrous.

glabrous (or with hairs on peduncles).

usually single.

single (often purplish-tinged).

progressively reduced distally (basal and proximal withering before flowering);

petiolate (petioles purplish, weakly winged, 4–5 cm);

blades broadly triangular-ovate to suborbiculate, 2–4(–5) × 2.5–3 cm, bases truncate to ± cuneate, margins coarsely spinulose-dentate (mid leaves similar, persistent).

mostly basal;

petiolate (petioles ± winged, lengths 1–3+ blades);

blades broadly ovate to ovate-orbiculate, (1.5–)2.5–4.5(–6) × 1.5–4(–5) cm, bases truncate or tapered, margins weakly dentate or repand-denticulate to subentire (cauline leaves smaller, bractlike).

“few”;

corolla laminae ca. 7 mm (inconspicuous, equaling or barely surpassing phyllaries).

± 13+;

corolla laminae 10–14 mm.

± 13, 7–9 mm, tips green.

± 21, (8–)10–16 mm, tips green.

of “few,” linear bractlets.

of 3–5+ lanceolate to lance-linear bractlets (lengths 1/2–2/3 phyllaries).

nodding, 4–6.

nodding, 1(–2).

glabrous.

glabrous.