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-pinnately dissected;

petiole sheathing usually entire length, rarely 50%, basal sheaths 7–12 mm wide;

blade rhombic or ovate, 13–33 × 17–48 cm, surfaces with papillae or small, triangular hairs abaxially on proximal leaves, otherwise glabrous;

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

penultimate segments narrow, usually less than 2 mm wide, ultimate segments 1500–5000, narrowly linear, 0.7–4.5 × 0.1–0.6 mm, congested, obscuring the short intercostal areas along rachillae, margins entire, apex narrowly acute, callus tips 0–0.2 mm, terminal segment 1–4 mm;

cauline leaves 0–4+.

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.

3–50+ per plant, 1 per stem, erect to ascending, not inflated, 4.4–40 cm, exceeding leaves, 2–3 mm wide 1 cm below umbel, distally papillate, otherwise smooth or ± papillate on veins.

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.

3.5–7 cm wide in flower, 6–12 cm wide in fruit, rays 5–16, ascending to spreading, 1.8–12.8 cm in fruit, very unequal, sparsely to densely papillate;

involucel bractlets few, distinct, linear, 3–4 mm, subequal to flowers, margins not 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.

(2.5–)5–9 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.

slightly or definitely dorsiventrally compressed, narrowly elliptic or narrowly oblong, 8–17 × 2–3.8 mm, length/width ratio 3.3–5.5, 0.5–1.2 mm thick;

wings 0.3–1 mm wide, 12–35% of body width, paler than body;

abaxial ribs slightly or not raised;

apex acute; 0.5–1.1 mm thick, oil ducts 1–2 in intervals, 2–6 on commissure, but often obscure or incomplete.