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-pinnately 2–several times dissected;

petiole sheathing usually entire length, rarely basally or part way, glabrous or obscurely scabrous;

blade rhombic or ovate to orbiculate, (2–)3–12(–14) × 1–11 cm, surfaces usually glabrous, sometimes scaberulous;

leaflets not overlapping, penultimate segments narrow, usually less than 2 mm wide, ultimate segments 30–130, linear, often very unequal, 4–50 × 0.5–1.4(–2) mm, often very unequal in length, larger ones longer than 6 mm, length/width ratio 4.4–12, larger ultimate segments longer than 6 mm, margins entire, usually not reflexed, apex rounded to acute, callus tips 0.1–0.2 mm, firm but not spinelike, terminal segment 4–40 mm;

cauline leaves 0–2, if present, with more than 5 ultimate segments, similar to basal.

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, 1 per stem, decumbent to erect, not inflated, 7–30 cm, exceeding leaves, 1–2 mm wide 1 cm below umbel, glabrous or scaberulous to granular scaberulous, especially distally.

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 cm wide in flower, 1–5 cm and ± congested in fruit, rays 3–15, usually spreading in flower, strictly ascending in fruit, to 11 cm in fruit, unequal even at anthesis, markedly so in fruit, glabrous or scaberulous to granular scaberulous;

involucel bractlets (0–)5–9(–10), present on at least some to most umbellets, distinct, linear, ± attenuate, 2–7(–10) mm, subequal to flowers, margins scarious, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, rarely white, glabrous;

anthers yellow;

ovary and young fruit glabrous.

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

0–2(–3) mm, shorter than fruit, ± erect when fruit is mature.

± 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, linear to narrowly elliptic, crowded, 6–16(–17) × (0.6–)1.5–3 mm, length/width ratio 3.5–6;

wings 0.2–0.5(–0.9) mm wide, 14–55% of body width, paler than body, spreading, well-developed;

abaxial ribs slightly raised;

apex acute to rounded;

oil ducts 1 in intervals, 2–4 on commissure, often inconspicuous.

= 22.