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-1–3-pinnate or less often quinate-1–3-pinnate;

petiole sheathing entire length;

blade triangular to ovate, 4–12 × 4–8 cm, surfaces hirtellous;

primary leaflets much divided; ultimate segments 100–300, oblong or very narrowly elliptic, 1–8 × 0.3–1 mm, ultimate segments narrow, not often overlapping, margins entire, usually not reflexed, apex acute, callus tips 0.1–0.3 mm, firm but not spinelike, terminal segment 1–5 mm;

cauline leaves 0.

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.

1–6 per plant, 1 per stem, decumbent, rarely to erect, when young, then erect to ascending, not inflated, 0.8–20 cm, exceeding leaves, 0.5–2 mm wide 1 cm below umbel, glabrous or puberulent.

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.

1.5–2 cm wide in flower, 3.6–6.5 cm wide in fruit, rays 3–9(–15), fruiting rays 1–6, ascending, though sterile ones sometimes reflexed, 1–8 cm in fruit, unequal, hirtellous or scabrous especially on adaxial side;

involucel bractlets 5–10, distinct, usually obovate, sometimes lanceolate, 3–4 mm, subequal to flowers, margins not or very narrowly scarious, usually ciliate, entire or less often lobed, 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.

1–5 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, ovate, purplish brown abaxially, ashy white adaxially, 7–10 × 3.5–5 mm, length/width ratio 1.7–1.9;

wings 0.5–0.7 mm wide, 15–25% of body width, ± same color as body, thick;

abaxial ribs not raised;

apex acute to obtuse;

oil ducts several, narrow, irregular, reticulate.