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 bluish green, pinnate-1–2-pinnatifid;

petiole sheathing basally;

blade narrowly oblong, (1.5–)2–11 × 1–4 cm, surfaces sparsely to densely scaberulous;

primary leaflets mostly with well-developed petiolules, not confluent with rachis, at least proximal ones, shorter than rachis segments separating them; ultimate segments 33–100, oblong, broadly elliptic, or lanceolate, 1–4 × 0.4–2 mm, margins entire, apex acute, callus tips 0–0.2 mm, terminal segment 0.7–2.5(–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.

1–4 per plant, 1 per stem, ascending or erect, not inflated, 5–25(–32) cm, exceeding leaves, 0.5–1.5 mm wide 1 cm below umbel, glabrous or 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.

0.7–3 cm wide in flower, 1.6–7.2 cm wide in fruit, rays 4–14, ascending, 0.5–4 cm in fruit, unequal, glabrous;

involucel bractlets (3–)6–10(–12), distinct or basally connate, lanceolate, sometimes elliptic, mostly 1–4 mm, shorter than or equaling flowers, margins scarious, scabrous, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, sometimes white when fresh, fading white, glabrous;

anthers colored as petals;

ovary and young fruit glabrous.

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

1–11 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-ovate, 3–9 × 3–4.5(–6) mm, length/width ratio 1.6–2.5;

wings 0.5–1.2 mm wide, 20–50% of body width, paler than body;

abaxial ribs sometimes raised and winglike;

apex usually truncate, sometimes rounded;

oil ducts 3–5 in intervals, 4–10 on commissure.