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, 1(–2)-ternate-pinnate-pinnatifid, rarely quinate-1–2-pinnate;

petiole sheathing usually 1/4 length, sometimes basally to less than 1/2 length;

blade ovate to rhombic, (2.5–)4–9 × (1.6–)2.5–9.4 cm, surfaces glabrous;

leaflets not overlapping, penultimate segments narrow, usually less than 2 mm wide, ultimate segments (10–)20–50, linear, (0.2–)10–50 × (0.1–)0.5–3 mm, relatively narrow, larger segments longer than 6 mm, margins entire or with tiny lobes, usually not reflexed, apex acute, callus tips 0–0.2 mm, firm but not spinelike, terminal segment 2–20(–40) mm;

cauline leaves 0.

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(–10) per plant, 1 per stem, ascending or erect, not inflated, 9–25 cm, exceeding leaves, 0.5–2 mm wide 1 cm below umbel, scaberulous.

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.

1–3(–6) cm wide in flower, (1.5–)3–10.6 cm and ± congested in fruit, rays 3–20, spreading to ascending in flower and fruit, 1–6 cm in fruit, unequal, glabrous or minutely scaberulous;

involucel bractlets 4–6, connate when well developed but sometimes small and distinct, linear to elliptic or ovate, 1.5–3 mm, subequal to flowers, margins scarious, usually broadly so, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals white, glabrous;

anthers rose to purple;

ovary and young fruit glabrous or rarely granular-roughened when young with up to 5 papillae per mm2, becoming smooth with age.

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

2–4(–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, narrowly to broadly elliptic, ovate, or ovate-oblong, 6–14 × (2.5–)4–6.5 mm, length/width ratio 1.3–2.8;

wings 1–1.6 mm wide, 30–65% of body width, paler than body, flat, not corky-thickened, well developed;

abaxial ribs slightly to definitely raised, sometimes narrowly winglike but much narrower than lateral wings;

apex rounded to truncate;

oil ducts 1–7 in intervals, 2–7 on commissure, obscure.

= 22.