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-3–4-pinnate or 2–3-pinnate;

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

blade rhombic, ovate, obovate, or oblong, 2.5–20 × 1–10 cm, surfaces densely hirtellous;

basal pair of primary leaflets not only evidently largest, but also usually conspicuously petiolulate, ultimate segments 150–3000+, linear to ovate or obovate, 1–7 × 0.5–1(–2.5) mm, margins entire, sometimes ciliate, apex acute, callus tips 0.1–0.3 mm, firm but not spinelike, terminal segment 0.1–3.5 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.

1–20 per plant, 1 per stem, prostrate or decumbent to erect, not inflated, 3–15 cm, exceeding leaves, 1–3 mm wide 1 cm below umbel, densely hirtellous.

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.

1–4 cm wide in flower, 2–9.5 cm wide in fruit, rays 1–30, spreading to erect, 0.7–8(–12.5) cm in fruit, subequal or unequal, puberulent to villous, rarely glabrous;

involucel bractlets 8–14, distinct or connate basally, less often to above middle, linear to lanceolate, sometimes oblanceolate, 2–5(–6) mm, shorter than or equaling flowers, margins scarious or not, ciliate, entire or lobed, usually copiously hirtellous-puberulent.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, or rarely white, sometimes turning purplish when dry, glabrous or sometimes minutely ciliate;

anthers yellow or white;

ovary and young fruit glabrous or sparsely to densely hirtellous-puberulent, sometimes glabrate.

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

1.5–12(–17) mm, usually 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.

dorsiventrally compressed, elliptic or ovate-oblong to suborbiculate, 4–10(–12) × 3–8 mm, length/width ratio 1–2;

wings 0.4–2.6 mm wide, 15–75% of body width, paler than body;

abaxial ribs not to distinctly raised;

apex rounded to obtuse;

oil ducts 1–7 in intervals, 2–6 on commissure, occasionally 1 in each wing.

= 22.