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 to gray-green, 3-pinnate or 2-pinnate-pinnatifid;

petiole sheathing basally to entire length;

blade ovate, 1.5–11 × 1–7 cm, surfaces villose, rarely glabrate;

leaflets overlapping or not, basal pair of primary leaflets largest, but mostly sessile or short-petiolulate, petiolules seldom over 1 cm, penultimate segments narrow, usually less than 2 mm wide, ultimate segments 100–250(–600), narrowly elliptic to ovate, 1–4(–6) × 0.5–2 mm, margins entire, usually not reflexed, apex acute, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 1–4(–6) mm;

cauline leaves 0–1, if present, with petioles sheathing throughout.

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.

1–8+ per plant, 1 per stem, ascending to erect, not inflated, 3–40 cm, exceeding leaves, 1–3 mm wide 1 cm below umbel, villose.

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.

1.6–2.7 cm wide in flower, 1.5–4.6 cm wide in fruit, rays 4–21, spreading, (1–)4–9 cm in fruit, subequal, hirtellous or glabrous;

involucel bractlets 0(or 4–10), distinct, linear to lanceolate, rarely elliptic, 1.5–4 mm, subequal to flowers, margins scarious, usually not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals white or pinkish white, glabrous;

anthers purple;

ovary and young fruit glabrous.

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

1.5–6.5(–9) 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 to ovate, 7.4–11 × 4.6–7.2 mm wide, length/width ratio 1.27–1.82, glabrous;

wings 0.6–1.6 mm wide, 20–40% of body width, paler than body;

abaxial ribs not raised;

apex obtuse to rounded;

oil ducts 1–4 in intervals, 2–8 on commissure, rarely 1 or 2 in each wing.