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, pinnately or ternate-pinnately about twice compound;

petiole sheathing basally to entire length;

blade oblong, 1–3 × 0.3–2 cm, surfaces usually hairy, sometimes glabrous;

primary leaflets mostly with well-developed petiolules, not confluent with rachis, ultimate segments 5–35, oblong, 1–3(–6) × 1 mm, margins entire, apex acute, callus tips 0–0.1 mm, terminal segment 4–10 mm;

cauline leaves 0.

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.

1–7 per plant, 1 per stem, ascending or erect, slightly inflated, 1–8 cm, exceeding leaves, 0.9–1.5 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.

0.4–0.9 cm wide in flower, 0.5–1.9 cm wide in fruit, rays 1–5, ascending to erect, 0.1–0.5 cm in fruit, very unequal, glabrous or hairy;

involucel bractlets 1–5, distinct, linear or narrowly lanceolate, 1.5–3.5 mm, longer than flowers, margins not scarious, sometimes ciliolate, entire, glabrous or sparsely hairy.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, glabrous;

anthers yellow to white;

ovary and young fruit glabrous, scaberulous, or villosulous.

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

to 1 mm, subequal to 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.

slightly dorsiventrally compressed, elliptic-oblong, 4.1–5.3 × 2.1–3.6 mm, length/width ratio 1.4–2.1;

wings 0.2 mm wide, 10–20% of body width, slightly paler than or ± same color as body;

abaxial ribs slightly raised;

apex acute to obtuse;

oil ducts 2–3 in intervals, 4 on commissure.