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, 2-pinnate-pinnatifid, ternate-2-pinnate, or indistinctly ternate-pinnate-pinnatifid, shiny or not;

petiole usually sheathing basally, rarely to 1/2 length, glabrous;

blade ovate, 3–8.5 × 1.4–5 cm, surfaces glabrous, rachis glabrous proximally;

basal pair of primary leaflets sessile or short-petiolulate, petiolules seldom over 1 cm, penultimate segments narrow, usually less than 2 mm wide, ultimate segments 30–200, elliptic, a few oblong, 1–4.5(–6) × (0.4–)0.6–1.5 mm, length/width ratio 1–3.5(–5), relatively firm, ± thick to ± thin, margins entire, apex rounded to acute, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 1–5 mm;

cauline leaves 0–1(–2), if present, with more than 5 ultimate segments, similar to 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.

usually 1–5 per plant, 1 per stem, spreading, ascending, or erect, often recurved to ground in fruit, not inflated, 6–16(–20) cm, usually less than 10 cm, exceeding leaves, 1–3 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.

0.5–3.5 cm wide in flower, 1.7–5.5 cm wide in fruit, rays 2–8(–12), spreading to ascending, 0.2–5 cm in fruit, unequal, glabrous;

involucel bractlets 3–6, distinct, linear to lanceolate, 1.5–4 mm, shorter than or equaling pedicels, margins often narrowly scarious, not ciliate, entire or slightly lobed, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, glabrous;

anthers yellow;

ovary and young fruit glabrous.

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

1.5–5 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 elliptic-ovate to oblong-oval, ebony brown, (4–)5.6–10.5 × (2.1–)3–5 mm, length/width ratio 1.2–2.6;

wings 0.6–1.5 mm wide, 25–50% of body width, ± same color as or paler than body;

abaxial ribs slightly or not raised;

apex acute, obtuse, rounded, or truncate;

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