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 or slightly blue-green, quinate-2–3-pinnate-pinnatifid;

petiole sheathing entire length;

blade triangular to ovate, 5–12 × 2.5–6 cm, surfaces glabrous or minutely scaberulous;

basal leaflets divided into 4–6 primary rachises, largest 2 lateral primaries similar in size and shape to central primary, additional, 1–3 smaller, lateral primaries at 1st node identical to secondaries in length and shape;

apical 2–3 pinnule pairs of secondary leaflets without naked intercostal region between rachilla and basalmost pinnule lobes, appearing sessile;

penultimate segments narrow, usually less than 2 mm wide, ultimate segments 200–1000, narrowly linear, flat, 1–4 × 0.2–0.5 mm, congested, obscuring short intercostal areas along rachillae, margins entire, apex acute, callus tips 0–0.1 mm, terminal segment 1–3.2 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 per plant, 1 per stem, ascending to erect, not inflated, 15–20 cm, exceeding leaves, 2–3 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.

0.5–6.7 cm wide in flower, 3.7–7.7 cm wide in fruit, rays 5–15, spreading, to 8 cm in fruit, unequal, glabrous;

involucel bractlets 3–6, distinct, narrowly elliptic 2–4 mm, subequal to flowers, margins narrowly scarious, not ciliate, entire, glabrous.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals yellow, glabrous;

anthers yellow;

ovary and young fruit glabrous.

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

7–17 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, elliptic, 7.2–9 × 3.5–4.6 mm, length/width ratio 1.7–2.1;

wings 0.5–1 mm wide, 17–35% of body width, paler than body;

abaxial ribs not raised;

apex rounded;

oil ducts 4–8 in intervals, 0(–2) on commissure.

= 22.