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 ternate-pinnate, shiny;

petiole sheathing entire length, reduced, glabrous;

blade ovate or rhombic, 1.5–9 × 1.1–9.5 cm, surfaces glabrous;

leaflets not overlapping, penultimate segments narrow, usually less than 2 mm wide, ultimate segments 10–42, narrowly elliptic to linear, 2–45 × 0.4–3.8 mm, averaging 1–2 mm wide, relatively narrow, length/width ratio 3–15, larger ones longer than 6 mm, margins entire, usually not reflexed, apex acute, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 2–45 mm;

cauline leaves 0.

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.

1–3 per plant, 1 per stem, usually prostrate to occasionally weakly to moderately ascending, never erect, not inflated, (2–)5.5–18 cm, exceeding leaves, 0.5–1 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.

0.4–1.8 cm wide in flower, 1.5–4.7 cm and ± congested in fruit, rays 2–23, ascending to spreading, 0.5–3.7 cm in fruit, unequal, glabrous;

involucel bractlets 1–8, usually present on at least some to most umbellets, distinct, linear to lanceolate, 0.6–3.2 mm, shorter than flowers, margins scarious, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals white to greenish white with green midvein, except bright yellow in 1 population, glabrous;

anthers rose-purple to purple if petals white, pale yellow if petals yellow;

ovary and young fruit glabrous.

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

0.5–3 mm, subequal to 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 elliptic, rarely oblong, crowded, (3.7–)5–7(–8) × 1.5–2.7 mm, length/width ratio (2.3–)2.5–3(–3.6);

wings 0.1–0.5(–0.6) mm wide, 10–25% of body width, paler than body, flat, not corky-thickened, well developed;

abaxial ribs not raised;

apex narrowly rounded;

oil ducts 1–3 in intervals, (0–)2–3 on commissure, obscure.