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, or rarely simple;

petiole sheathing basally to entire length, exceptionally chaffy;

blade ovate to triangular, 2–6 × 2–8 mm, surfaces glabrous, usually channeled;

leaflets not overlapping, penultimate segments narrow, usually less than 2 mm wide; ultimate segments 3–30, linear to linear-lanceolate, 5–60 mm, larger segments longer than 6 mm × 1–5 mm, relatively narrow, margins entire, apex acute to obtuse, callus tips 0–0.2 mm, terminal segment (8–)20–50 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(–10) per plant, 1 per stem, ascending or erect, not inflated, 2–15 cm, subequaling or rarely much exceeding leaves, 1–2.5 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.

0.5–1.1 cm wide in flower, 1–6.7 cm wide in fruit, rays 3–12, spreading to ascending, 0.3–3.5(–6) cm in fruit, very unequal, glabrous, rarely scabrous;

involucel bractlets (0 or 3–)5–9, distinct, linear, 1–2 mm, usually shorter than flowers, margins green or narrowly scarious, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals white, glabrous;

anthers purple;

ovary and young fruit glabrous.

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

0–1.5 mm, shorter than fruits.

± 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.

not or slightly dorsiventrally compressed, ovate to broadly elliptic, crowded, 2–5 × 1–3.2 mm, length/width ratio 1.2–2.3;

wings reduced to corky-thickened ribs 0–0.2 mm wide, ± same color as body;

abaxial ribs not raised;

apex obtuse to rounded;

commissure with raised corky ridge running down center;

oil ducts several in intervals and on commissure.