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, pinnate or pinnatifid with 2–6 pairs of primary leaflets, these entire or some of them 2–3-fid;

petiole sheathing basally;

blade oblong, 1–10(–18) × 2.2–6.5(–10.5) cm, surfaces glabrous or in part obscurely granular-scabrous;

primary leaflets sessile and ± confluent with rachis, longer than rachis segments separating them, usually entire, occasionally compound, rarely with more than 5 secondary leaflets, ultimate segments (5–)7–25, lanceolate to elliptic, wider near middle than at either end, (0.5–)10–40(–45) × 2–7(–12) mm, margins entire, apex acute, terminal segment 5–45 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–)10–50 per plant, 1 per stem, curved-ascending, not inflated, 4–27 cm, equaling or exceeding leaves, 1–2.5 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.

1–4 cm wide in flower, 3.5–4.5 cm wide in fruit, rays 4–13, spreading, 1–2 cm in fruit, subequal, glabrous;

involucel bractlets (4–)5–8, distinct or connate basally, linear-attentuate, lanceolate, or narrowly elliptic, (2–)5–10(–15) mm, usually exceeding 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.

2–5 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.

dorsiventrally compressed, oblong, 7–12 × 3–7 mm, length/width ratio 1.6–3.1;

wings 1.5–2 mm wide, 50–65% of body width, paler than body;

abaxial ribs slightly raised;

apex narrowly rounded;

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