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, green, 2–3-pinnate-1–2-pinnatifid or ternate-pinnate-pinnatifid;

petiole sheathing basally, glabrous;

blade broadly ovate to triangular, 3–15 × 2.2–16 cm, surfaces glabrous; ultimate segments 80–400, linear, lanceolate, or narrowly elliptic, 0.5–4(–6.5) × 0.5–1 mm, length/width ratio 1–5, margins entire, apex acute, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 0.5–3 mm;

cauline leaves 0.

absent or subterranean.

absent.

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.

1–2 per plant, 1 per stem, decumbent, ascending, or erect, not inflated, 4.5–28 cm, exceeding leaves, 0.5–1.8 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.

2.2–3.4 cm wide in flower, 2.5–6(–10.5) cm wide in fruit, rays 4–7, fruiting rays 2–5, ascending to spreading, 0.5–3(–13.2) cm in fruit, unequal, glabrous;

involucel bractlets 0(–2), absent on most umbellets, distinct, linear to lanceolate, vestigial or 1.5–5 mm, shorter than flowers, margins narrowly scarious, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, glabrous;

anthers yellow;

ovary and young fruit glabrous.

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

3–16 mm, shorter or longer 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, broadly oblong, 7.8–10 × 3.5–5 mm, length/width 1.8–2.2;

wings 0.5–1.3 mm wide, 28–52% of body width, paler than body;

abaxial ribs slightly or not raised;

apex obtuse to rounded;

oil ducts 1 in intervals, 4–6 on commissure, conspicuous.