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, grayish green, 1–2-ternate-1–2-pinnate-pinnatifid or 1–2-quinate-1–2-pinnate-pinnatifid;

petiole sheathing more than 1/2 to entire length, reduced;

blade rhombic to quadrate, 5.5–15 × 4–8 cm, surfaces sparsely to densely hairy;

primary leaflets much divided, ultimate segments 200–450, narrowly lanceolate to narrowly elliptic or oblong, 4–22 × 0.6–3 mm, relatively narrow, appearing spread along leaf because naked portions of petiolules are usually shorter than part of leaflet that has blades, margins entire, usually not reflexed, apex acute, callus tips 0–0.1 mm, terminal segment 4–22 mm;

cauline leaves 0–3, if present, with more than 5 ultimate segments.

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.

2–18 per plant, 1 per stem, erect to ascending, slightly inflated, 8–40 cm, subequal to leaves in flower, exceeding them in fruit, 1–2 mm wide 1 cm below umbel, hirtellous.

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.

1–3 cm wide in flower, 2–9(–10) cm wide in fruit, rays 3–23, ascending to spreading, 1–10.2 cm in fruit, unequal, hirtellous;

involucel bractlets (0 or 4–)5–9(–11), distinct, linear or nearly so, 2.3–6.8 mm, shorter or longer than flowers, margins scarious, occasionally ciliate, entire, glabrous or minutely scabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow with greenish midvein, glabrous;

anthers yellow;

ovary and young fruit densely hirtellous, especially when immature, with easily dislodged, narrowly triangular trichomes less than 0.2 mm, often becoming sparsely hirtellous to glabrous with age.

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

(1–)2–13.5 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, narrowly elliptic to oblong, 9–12.4(–17.7) × 3.9–7.2 mm, length/width ratio 2–3.6;

wings 0.6–1.5 mm wide, 24–60% of body width, paler than body;

abaxial ribs prominently raised, often narrowly winglike on young fruits;

apex rounded or obtuse;

oil ducts well-developed, (3–)4(–5) in intervals, (2–)4(–5) on commissure, occasionally with additional vestigial ducts on commissure.