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, usually green, sometimes blue-green, 1–2-ternate-2–3-pinnate-2-pinnatifid, basal leaves with petiole sheathing basally to entire length;

blade ovate, 8–50 × 8–50 cm, surfaces scabrous abaxially at least on margins and veins, usually glabrous adaxially; ultimate segments 1000–8000, mostly linear, 2–22 × 0.5–3.8 mm, relatively narrow, margins entire, usually not reflexed, apex rounded to acute, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 15–50 mm;

cauline leaves (0–)1–3, usually with more than 5 leaflets, with petioles sheathing throughout.

absent or subterranean.

absent.

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, 20–50 cm, exceeding leaves, (2–)3–6 mm wide 1 cm below umbel, not brittle, 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.

4.2–16.5 cm wide in flower, 7.9–15.3 cm wide in fruit, rays (1–)10–35, fertile rays (1–)6–30, ascending to spreading, 2.5–10 cm in fruit, unequal, glabrous;

involucel bractlets (4–)5–9, connate basally, linear to lanceolate, 1.5–10(–18) mm, usually subequal to flowers, sometimes longer, margins very broadly scarious, not ciliate, entire, usually glabrous, sometimes scabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, sometimes brown or purplish, glabrous;

anthers green to yellow, sometimes brown or purplish;

ovary and young fruit glabrous.

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

4–20 mm, shorter than fruit, longer than pedicels of staminate flowers.

± 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, 9.5–14 × 4.4–8 mm, length/width ratio 1.4–2.4;

wings 0.6–1.2 mm wide, 12–25% of body width, ± same color as body;

abaxial ribs not raised;

apex rounded to obtuse;

oil ducts often 1 intervals, obscure, often 6 on commissure, obscure.

= 22.