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.

many per plant, arising at slightly different heights, not forming just 1 rosette, green with bluish tint, 1–2-pinnate;

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

blade oblong, 1.5–2.5(–3.5) × 0.3–2.8(–3.4) cm, surfaces glabrous, except usually scaberulous along margins and sometimes on abaxial surface of midrib;

primary leaflets sessile and ± confluent with rachis or petiolulate ultimate segments 5–30, linear, elliptic, or oblanceolate, 3–9(–15) × 1–3(–3.5) mm, relatively narrow, ± flat and wider than rachis, margins entire, sometimes irregularly pappilose, usually not reflexed, apex acute, callus tips 0.2 mm, firm but not spinelike, terminal segment 4–15 mm;

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

absent or subterranean.

absent or 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.

1–40 per plant, 1–2 per stem, ascending to erect, not inflated, 3–10 cm, slightly exceeding leaves, 1 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.

0.3–0.8(–1) cm wide in flower, 0.5–1.2 cm wide in fruit, rays 3–6, ascending, 0.1–0.3 cm in fruit, equal to subequal, glabrous;

involucel bractlets 1–8, distinct, linear, 1.5–2 mm, ± equaling pedicels, margins scarious, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

sepals scarious or purple, 0.1–0.2 mm, obtuse;

petals yellow, glabrous;

anthers white;

ovary and young fruit glabrous.

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

0–0.8(–1) mm, shorter than fruits.

± 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, ovate to elliptic, 2.9–5 × 1.6–2.7 mm, length/width ratio (1.6–)1.8–2.2, fully mature fruit not seen;

wings 0.3–0.5 mm wide turned down when fully mature, ± same color as body;

abaxial ribs slightly to distinctly raised and winglike but much narrower than lateral wings;

apex rounded, truncate;

oil ducts 1 in intervals, 2 on commissure.