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 to gray-green, 1–2-pinnate-pinnatifid;

petiole sheathing basally to entire length;

blade ovate to rhombic, (1.5–)3–5(–7) × 1–5 cm, surfaces glabrous or hairy; ultimate segments 30–85, linear, 1–5 × 0.5–0.8 mm, margins entire, apex obtuse, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 1–5 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.

1–6 per plant, (2–)3–4 per stem, ascending or erect, not inflated, 7–18 cm, exceeding leaves, 0.5–1.5 mm wide 1 cm below umbel, glabrous or hairy.

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.

0.8–2 cm wide in flower, 2.4–5.2 cm wide in fruit, rays 1–11(–20), ascending to spreading, 0.5–4 cm in fruit, unequal, glabrous or hairy;

involucel bractlets 5–9, those of some umbellets, especially pistillate ones, connate 80+% their length, and those of other umbellets, especially staminate ones, distinct or connate basally, or connate most of their length into groups of 3–4, obovate or broadly elliptic, 1.5–5 mm, equaling or shorter than flowers, margins scarious, not ciliate, entire, glabrous or hairy.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, sometimes white, glabrous;

anthers yellow;

ovary and young fruit glabrous or puberulent with up to 100 simple, unicellular, white trichomes per mm2.

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

0–2(–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, broadly lanceolate, 4.5–11 × 2.5–5 mm, length/width ratio 1.6–2.4;

wings 0.1–0.8 mm wide, (5–)10–33% of body width, paler than body;

abaxial ribs slightly or not raised;

apex acute;

oil ducts 2–6 in intervals, 4–8 on commissure, obscure.

= 24.