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, ± blue-green, 1–2-pinnate or pinnate-pinnatifid;

petiole sheathing basally;

blade narrowly oblong, 2.5–7 × 1–2 cm, surfaces scaberulous;

primary leaflets mostly with well-developed petiolules, not confluent with rachis, at least proximal ones shorter than rachis segments separating them, ultimate segments 40–100, elliptic to narrowly elliptic, 3–6.5 × 0.5–1.5 mm, margins entire, apex acute to obtuse, callus tips 0.1–0.3 mm, terminal segment 3–6 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.

1–15 per plant, 1 per stem, ascending to erect, not inflated, 4–9 cm, exceeding leaves, 1–2 mm wide 1 cm below umbel, glabrous or scaberulous.

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.

1.5–3 cm wide in flower, 3–7 cm wide in fruit, rays 4–7, ascending, 0.8–3 cm in fruit, unequal, glabrous or sparsely scaberulous;

involucel bractlets few, distinct, linear, elliptic, or oblanceolate, 3–8 mm, much shorter than to distinctly exceeding flowers, margins 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.

(6–)10–17 mm, longer than or subequal to 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, oblong, 8–11 × 4–5(–6) mm, length/width ratio 2.4;

wings 1 mm wide, 30–40% of body width, paler than body;

abaxial ribs slightly raised;

apex rounded to obtuse;

oil ducts 3–4 in intervals, 6–8 on commissure.