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, bright green, 2-pinnate-pinnatifid, ternate-2-pinnate-pinnatifid, or quinate-2-pinnate-pinnatifid;

petiole conspicuously expanded and sheathing basally or to less than 1/2 length;

blade oblong-ovate to triangular-ovate, 5–15 × 2–5.6 cm, surfaces scaberulous to glabrate;

primary leaflets much divided;

penultimate segments narrow, usually less than 2 mm wide, ultimate segments (300–)400–1000, elliptic or oblong, 1–5 × 0.5–0.8(–1) mm, margins entire, apex usually obtuse, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 1–5 mm;

cauline leaves 2–9, with petioles sometimes sheathing entire length.

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–)2–6 per plant, (1–)2–4(–6) per stem, ascending or erect, not inflated, 5–16 cm, exceeding leaves, 0.7–2.5 mm wide 1 cm below umbel, glabrous or scabrous, especially distally.

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.

1.5–5(–6) cm wide in flower, 4–11 cm wide in fruit, rays 6–15, spreading-ascending, 1–8 cm in fruit, unequal, glabrous or sparsely to strongly scabrous;

involucel bractlets 5–10, distinct, mostly oblanceolate, 1.8–8 mm, equaling or shorter than flowers, margins scarious, not ciliate, entire, lobed, or toothed, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, glabrous;

anthers yellow;

ovary and young fruit granular-roughened when young, generally becoming glabrous or sparsely scabrous with age.

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

3–15 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, often broadly so, 7–15 × 3.2–8 mm, length/width ratio 1.3–2;

wings 0.6–2.1 mm wide, (25–)30–90% of body width, paler than body;

abaxial ribs raised, often like thin wings;

apex rounded;

oil ducts 1–4 in intervals, 4–5 on commissure.

= 22.