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, blue-green, pinnate-2–3-pinnatifid;

petiole sheathing basally, scarious;

blade broadly triangular to ovate, 1.5–4 × 2–5 cm, surfaces glabrous; ultimate segments 450–650, usually lanceolate, 1–3 × 0.5–1 mm, margins entire, apex acute to acuminate, callus tips 0.2–0.6 mm, stiff, spinelike, terminal segment 1.8–4.5 mm;

cauline leaves 0.

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.

1–15 per plant, 1 per stem, ascending or erect, not inflated, 4–12 cm, much exceeding leaves, 0.8–1.2 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.

1.5–2.5 cm wide in flower, (1–)2–11 cm wide in fruit, rays 5–9, spreading, 0.1–0.8(–2) cm in fruit, unequal, glabrous;

involucel bractlets 3–6, distinct or connate basally, narrowly to broadly lanceolate, 1–3.5 mm, ± equaling to ± exceeding flowers, margins narrowly scarious, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals purple or brown, glabrous;

anthers yellow;

ovary and young fruit glabrous.

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

0.5–1 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.

not or slightly dorsiventrally compressed, circular to widely elliptic, (7.3–)8–8.2(–10) × 7–8.5(–9) mm, length/width ratio 0.9–1.2;

wings 1–1.6 mm wide, 20–35% of body width, paler than body;

abaxial ribs not raised;

apex rounded to truncate;

oil ducts 3–5 in intervals, 8–10 on commissure.