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, ± 1–2-ternate-1–2-pinnate;

petiole usually sheathing entire length, sometime basally or part way, glabrous;

blade rhombic or triangular, 7–10(–13.5) × 3.8–14(–17) cm, surfaces glabrous;

leaflets not overlapping, penultimate segments narrow, usually less than 2 mm wide, ultimate segments 30–150, ascending to spreading in life, linear, 2–27 × 0.2–2.3 mm, typically about 10 × 1 mm, most longer than 6 mm, length/width ratio (6–)9–25, crowded, confluent at base with adjacent lobe, petiolule absent, margins entire, usually not reflexed, apex acute, callus tips 0–0.1 mm, firm but not spinelike, terminal segment (4–)14–35(–40) mm;

cauline leaves 0(–3), distal one much reduced with 1–3 ultimate segments.

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–few per plant, 1 per stem, strongly ascending to erect, often weakly and discontinuously purplish at base, not inflated, (5–)10–30(–37) cm, greatly exceeding leaves, 1–2 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.

0.7–3 cm wide in flower, 1.3–3.8 cm, and ± congested in fruit, rays 3–12, usually spreading in flower, ± ascending in fruit, 0.2–5.3 cm in fruit, unequal in flower, very unequal in fruit, glabrous;

involucel bractlets (0–)5–7(–14), present on at least some to most umbellets, distinct, linear, 1.5–6.4 mm, subequal to or shorter than flowers, margins green or narrowly scarious, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals bright yellow, glabrous;

anthers bright or pale yellow;

ovary and young fruit glabrous.

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

(1–)2–3.8 mm, shorter than fruit, spreading to erect when fruit is mature.

± 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.

slightly or definitely dorsiventrally compressed, elliptic to narrowly elliptic, 4–7.8 × 1.6–2.8 mm, length/width ratio 1.9–3.8;

wings 0.2–0.5 mm wide, 10–40% of body width, paler than body, flat, spreading, not corky-thickened, well-developed;

abaxial ribs slightly raised;

apex obtuse;

oil ducts 4–5 in intervals, 2 on commissure.