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-1–2-pinnately dissected;

petiole sheathing basally to entire length, glabrous;

blade triangular to rhombic, 6–30 × 2–15 cm, surfaces glabrous;

penultimate segments narrow, usually less than 2 mm wide, ultimate segments 100–400, linear, 3–6(–10) × 0.5–1 mm, margins entire, usually not reflexed, apex acute, callus tips 0.1–0.2 mm, firm but not spinelike, terminal segment 1–15 mm;

cauline leaves 0–1(–2).

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.

1–4 per plant, 1 per stem, ± erect, not inflated, 15–45 cm, exceeding leaves, 1–2(–3) 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.

1–10 cm wide in flower, 4–15 cm wide in fruit, rays 10–25, spreading, longer ones 4–13 cm in fruit, unequal, glabrous or distally scaberulous;

involucel bractlets 5–14, distinct, broadly elliptic to broadly oblong, or obovate, often abruptly narrowed to an acuminate tip, (1.5–)2.5–10.5 mm, subequal to flowers, margins scarious, not ciliate, deeply dissected, sometimes 2-pinnate, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals light yellow, glabrous;

anthers yellow;

ovary and young fruit glabrous.

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

2–5 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, oblong to oblong-oval to perfectly elliptic, 7.5–13 × 4.5–7 mm, length/width ratio 1.4–2.3;

wings 0.9–2.2 mm wide, 20–90% of body width, about same color as body, corky-thickened;

abaxial ribs slightly raised;

apex rounded to truncate;

oil ducts obsure.