Flora of North America species comparison

arising at slightly different heights, not forming just 1 rosette, blue-green, glaucous, often 2–3-ternate-3-pinnately dissected;

petiole broadly sheathing basally to 1/2 length;

blade triangular to ovate, 5–12 × 2.7–10 cm, surfaces glabrous;

penultimate segments narrow, usually less than 2 mm wide, ultimate segments 1000–5000, linear, 1–5 × 0.5 mm, not overlapping, margins entire, apex acute, callus tips 0–0.2 mm, firm but not spinelike, terminal segment 1–5 mm;

cauline leaves 0–2, petioles sometimes sheathing more than 1/2 length.

arising at slightly different heights, not forming just 1 rosette, ternate-2–3-pinnate or ternate-3-pinnate-2-pinnatifid, basal leaves with petiole sheathing basally to entire length;

blade ovate to orbiculate, 7–30 × 6–15(–20) cm, surfaces glabrous; ultimate segments 300–2500, elliptic, sometimes ovate to lanceolate, 0.5–3(–4) × 0.5–1.2 mm, usually overlapping, margins entire, apex distinctly attenuate, callus tips 0.1–0.3 mm, firm but not spinelike, terminal segment 3–6 mm;

cauline leaves 0–5.

absent or subterranean.

subterranean.

1–6 per plant, usually 1 per stem, decumbent, spreading, or ascending, strongly inflated at maturity, 5–15(–24) cm, exceeding leaves, 2–8(–11) mm wide 1 cm below umbel, glabrous.

1–12 per plant, 1–3 per stem, ascending to erect, not inflated, 5–20 cm, exceeding leaves, 1–3(–3.5) mm wide 1 cm below umbel, glabrous.

2.5–4.7 cm wide in flower, 3.6–8.6 cm wide in fruit, rays 6–16, spreading, 1–4(–6) cm in fruit, subequal to unequal, glabrous;

involucel bractlets several, distinct, linear-subulate, (3–)4–9(–15) mm, shorter or longer than flowers, margins very broadly scarious, not ciliate, entire, glabrous;

umbellets 8–15-flowered.

1.5–6.5 cm wide in flower, 5–16 cm wide in fruit, rays usually 5–13, spreading, longer ones mostly 3–10 cm in fruit, unequal, glabrous;

involucel bractlets few–10, distinct or some connate basally, linear-lanceolate to linear or very short and triangular, 1–3 mm, subequal to flowers, margins scarious, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals red-purple or brown, glabrous;

anthers rose;

ovary and young fruit glabrous.

(5.5–)6.5–8(–9) mm, shorter than fruit.

5–20 mm, shorter than fruit.

± dorsiventrally compressed, narrowly elliptic or oblong-oval, 8.8–16(–19.3) × (3–)4.7–7.8 mm, length/width ratio 1.9–3.3;

wings 0.9–2 mm wide, 25–50% of body width, ± same color as body;

abaxial ribs slightly raised;

apex obtuse;

oil ducts usually 1 in intervals, 3–4 on commissure, conspicuous.

dorsiventrally compressed, elliptic to narrowly oblong, (7–)9–13(–15) × 3–6.5 mm, length/width ratio 1.6–3.3;

wings 0.5–0.6 mm wide, 10–15% of body width, about same color as body;

abaxial ribs slightly raised;

apex obtuse to rounded;

oil ducts usually 3 in intervals, several on commissure.