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, ternate-1–2-pinnatifid;

basal leaves with petiole sheathing 1/2 to entire length, glabrous;

blade triangular-ovate, 2–5(–6) × 2–5(–6) cm, surfaces glabrous;

leaflets not overlapping, penultimate segments narrow, usually less than 2 mm wide, ultimate segments 10–41, linear, 2–31(–40) × 1–2 mm, length/width ratio (5–)10–35, larger ultimate segments longer than 6 mm, margins entire, usually not reflexed, apex acute, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 2–31(–40) mm, length/width ratio 1.2–16;

cauline leaves 0.

absent or subterranean.

absent or occasionally present and 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.

1–2 per plant, 1 per stem, decumbent to erect, not inflated, 5–15 cm, equaling or exceeding leaves, 0.5–1 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.

0.9–1.5 cm wide in flower, 1.5–3.8 cm wide in fruit, rays 2–5, ascending, 0.1–1.2 cm in fruit, unequal, glabrous;

involucel bractlets 0.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals lemon yellow, glabrous;

anthers lemon yellow;

ovary and young fruit glabrous.

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

0.4–2(–2.5) 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, broadly elliptic, crowded, 6–9 × 3–4 mm, length/width ratio 2.1–2.3;

wings 0.2–0.6 mm wide, 10–25% of body width, paler than body, well developed;

abaxial ribs not raised;

apex acute;

oil ducts 1–4 in intervals, 0–4 on commissure.

= 22.