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, ternate-2–3-pinnate-pinnatifid;

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

blade triangular or rhombic, 2–10(–20) × 1.8–3 cm, surfaces glabrous;

penultimate segments narrow, usually less than 2 mm wide, ultimate segments 250–600, strongly ascending in life, narrowly linear, 1.2–14.5 × 0.1–0.6(–0.9) mm, margins entire, apex acute, callus tips 0–0.1 mm, terminal segment 1.2–7 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, decumbent to erect, not inflated, 3.3–28(–38.5) cm, exceeding leaves, 0.5–1.5 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.

1.5–4(–6) cm wide in flower, 1.5–4(–6) cm, appearing ± congested in fruit, rays 4–13, ascending to erect, 1.1–6.5 cm in fruit, unequal, glabrous or papillate;

involucel bractlets 5–10(–11), distinct, narrowly lanceolate to narrowly oblanceolate, 0.3–2.1(–3.5) mm, equaling or 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.

1–4.3(–6.2) 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 but wings ± down-curved, linear to linear-oblong, 10–18.6 × (0.9–)1.9–3.6(–4) mm, length/width ratio 3.6–8.5;

wings 0.3–0.7 mm wide, 10–25% of body width, paler than body;

apex acute;

oil ducts 1 in intervals, 2–4(–6) on commissure, sometimes obscure or incomplete.