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-1–2-pinnate-pinnatifid;

petiole sheathing entire length, glabrous or obscurely scabrous;

blade rhombic to ovate, (2–)3–15 × 1–4 cm, surfaces obscurely scaberulous along margins, rachis glabrous proximally; ultimate segments 100–400, narrowly linear or narrowly elliptic, 3–10 × 0.2–1 mm, length/width ratio 4.4–12, margins entire, apex acute, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 3–20(–35) mm;

cauline leaves 0–2.

absent or subterranean.

absent or 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.

1–10 per plant, 1 per stem, ascending or erect, not inflated, 8–20 cm, equaling or exceeding leaves, 1–1.5 mm wide 1 cm below umbel, sparsely scaberulous.

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.

0.8–2.5 cm wide in flower, 2.5–5 cm wide in fruit, rays 3–9, ascending to spreading-ascending, 1–4 cm in fruit, unequal, glabrous;

involucel bractlets 0(–3), absent on most umbellets, distinct, lanceolate, 1–3 mm, shorter than flowers, margins scarious, not ciliate, entire, 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.

1–10 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, narrowly oblong, 7.5–15 × (0.6–)1.5–3 mm, length/width ratio 3.5–5;

wings 0.3–0.9 mm wide, 20–60% of body width, paler than body;

abaxial ribs not raised;

apex acute or truncate at narrow tip;

oil ducts 1 in intervals, 2 on commissure.

= 22.