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 or blue-green, pinnate-1–2-pinnatifid or ternate-pinnate-pinnatifid;

basal leaves with petiole usually sheathing basally to entire length;

blade rhombic to ovate, 4.5–10 × 0.5–3.5 cm, ± thin, surfaces glabrous;

penultimate segments narrow, usually less than 2 mm wide, ultimate segments 100–250, linear to broadly elliptic, 0.5–3(–7) × 0.4–2 mm, margins entire, usually not reflexed, apex acute or obtuse, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 0.5–3(–7) mm;

cauline leaves 0(–1), if present, with more than 5 ultimate segments, similar to the basal leaves.

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, 1–2 per stem, decumbent to erect, not inflated, 10–20 cm, exceeding leaves, 0.5–1(–1.2) mm wide 1 cm below umbel in fruit, 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.

0.8–2.6 cm wide in flower, 1–4 cm wide in fruit, rays 6–12, fruiting rays 1–6, strictly ascending, 0.5–8 cm in fruit, very unequal, glabrous or scaberulous;

involucel bractlets 2–6, distinct, obovate to oblanceolate, 1–2.5(–4) mm, subequal to flowers, margins scarious, not ciliate, entire or toothed, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow or white, glabrous;

anthers yellow, cream, or purple;

ovary and young fruit glabrous.

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

1–5(–6) 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-ovate to elliptic, 4.8–10(–11.5) × 2.5–5 mm, length/width ratio 1.7–2.6(–3.2);

wings 0.5–1 mm wide, 40–70% of body width, paler than body;

abaxial ribs not raised;

apex usually acute;

oil ducts 2 in intervals, 7 on commissure, obscure.

= 22.