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

petiole sheathing 1/2 to entire length, glabrous;

blade triangular-ovate to rhombic, 5–21 × 3.7–12 cm, surfaces glabrous;

penultimate segments narrow, usually less than 2 mm wide, ultimate segments 12–250, ascending to spreading in life, linear, (5–)10–80 × 0.5–2.5 mm, length/width ratio 10–60, margins entire, usually not reflexed, apex acute, callus tips 0–0.2 mm, firm but not spinelike, terminal segment 5–60 mm;

cauline leaves 0(–2), if present, usually with more than 5 leaflets.

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.

1–12+ per plant, 1 per stem, ascending or erect, not inflated, 10–40 cm, exceeding leaves, 1–4 mm wide 1 cm below umbel in fruit, glabrous, occasionally sparsely scabrous.

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 cm wide in flower, 4.3–13 cm wide in fruit, rays 3–15, fruiting rays 1–10, spreading to ascending, 1.5–15 cm in fruit, unequal, glabrous or sparsely to densely covered adaxially with short, peglike papillae;

involucel bractlets 0–5, present on most umbellets, distinct, narrowly to broadly linear or lanceloate, rarely narrowly oblanceolate, 1–5 mm, exceeding flowers, margins narrowly scarious, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, dark purple, or rarely purplish white, glabrous;

anthers yellow or dark purple;

ovary and young fruit glabrous.

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

3.5–13 mm, shorter or longer 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, narrowly oblong to obovate, 5.8–10(–12) × 4–5.8 mm, length/width ratio 1–2.2(–2.4);

wings 1.1–2 mm wide, 44–80% of body width, paler than body;

abaxial ribs not raised;

apex obtuse, rounded or truncate;

oil ducts obscure.