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 or gray-green, 2–3(–4)-pinnate-pinnatifid or indistinctly ternate or quinate;

petiole sheathing basally to entire length;

blade triangular to rhombic or broadly elliptic, 6.5–15 × 4–12 cm, surfaces glabrous or scabrous;

primary leaflets much divided, ultimate segments 150–350, linear or narrowly oblong, 3–10 × 0.5 mm, length/width ratio 4.4–12, margins entire, usually not reflexed, apex acute, callus tips 0.1–0.2 mm, firm but not spinelike, terminal segment 2–4 mm;

cauline leaves 0(–1).

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.

1–15 per plant, 1–2 per stem, ascending to erect, not inflated, purplish especially proximally, 12–30 cm, 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.

2–5 cm wide in flower, 3–13 cm wide in fruit, rays 6–18, fruiting rays 1–15, ascending, 3–13.5 cm in fruit, very unequal, glabrous or scaberulous;

involucel bractlets 0.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals pale yellow, glabrous;

anthers yellow;

ovary and young fruit glabrous.

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

5–12 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, oblong to obovate, 7–10 × 5–6 mm, length/width ratio 1.3–2.3;

wings 0.9–1.3 mm 30–55% of body width, paler than body;

abaxial ribs slightly raised;

apex rounded, obtuse, or truncate;

oil ducts usually 1 in intervals, 2–4 on commissure, obscure.

= 22.