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, 1–2-ternate or quinate, then 2–3-pinnate or pinnate-pinnatifid;

petiole conspicuously sheathing entire length or nearly so;

blade ovate, triangular, or rhombic, 2–10(–11) × 0.5–8 cm wide, surfaces glabrous or villosulous;

primary leaflets much divided, basal pair of primary leaflets not only evidently largest but also conspicuously petiolulate, petiolules in well-developed leaves mostly 1–3(–4) cm; ultimate segments 50–600, linear, 1–5(–7) × 0.5–1.5 mm, margins entire, apex usually acute or appiculate, callus tips 0–0.2 mm, terminal segment 4–9 mm;

cauline leaves 0–2.

absent or subterranean.

often present, 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.

1–8+ per plant, 1(–2) per stem, nearly prostrate to erect, proximally purplish, not inflated, 2–39 cm, exceeding leaves, 1–2.5 mm wide 1 cm below umbel, villosulous, sometimes sparsely so.

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.

0.9–3 cm wide in flower, (1–)1.5–6.9 cm wide in fruit, rays 3–10, ascending, to 8 cm in fruit, unequal, scaberulous;

involucel bractlets 1–5, distinct or connate basally, linear, lanceolate, or filiform-subulate, 1–5 mm, subequal to or shorter than flowers, margins narrowly to broadly scarious, cilate or not, entire, glabrous, sometimes sparsely scabrous or sparsely hairy.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, cream, white, or sometimes purplish, glabrous;

anthers white, ochroleucous, or yellow, seldom purplish;

ovary and young fruit usually glabrous, sometimes scabrous or sparsely hirtellous but becoming glabrous with age.

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

3–10(–17) 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, broadly oblong to elliptic, 5–12 × 3–5(–6) mm wide, length/width ratio 1.5–2.2;

wings 0.8–1.3 mm wide, 25–55% of body width, paler than body;

abaxial ribs slightly raised;

apex obtuse;

oil ducts 2–4 in intervals, 4–6 on commissure, readily visible.