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.

1–3 per plant, sometimes forming 1 rosette atop pseudoscape, olive green, gray-green, or ± blue-green, 3–4 times pinnately divided;

petiole usually sheathing basally to entire length;

blade triangular to triangular-hastate, 1–3.5 × 0.5–2.7 cm, surfaces glabrous;

penultimate segments narrow, usually less than 2 mm wide; ultimate segments typically congested and overlapping, 100–900, mostly elliptic, 0.8–2.5 × 0.4–1.5 mm, length/width ratio (0.8–)1.4–3.5, relatively firm, ± thick to ± thin, margins entire, slightly crisped, apex ± acute, obscurely scaberulous, callus tips 0–0.05 mm, firm but not spinelike, terminal segment 1–2.5 mm;

cauline leaves 0.

absent or subterranean.

absent or very short, subterranean, and pale or straw-colored.

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.

1–2(–4) per plant, 1 per stem, spreading or ascending, often purplish, not inflated, 1–5.5 cm, slightly exceeding leaves, 1 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.

unknown width in flower, 1–3 cm wide in fruit, rays 2–6, spreading or ascending in fruit, 0.1–1.5(–2) cm in fruit, unequal, glabrous;

involucel bractlets (0–)1–4(–8), distinct, linear to narrowly lanceolate, glabrous, 1–3(–4.5) mm, subequal to flowers, margins green to scarious, not ciliate, entire.

petals purple to dark pink, glabrous;

anthers purple;

ovary and young fruit glabrous.

petals purplish white with purple midvein, fading to white, glabrous;

anthers purplish white, fading to white;

ovary and young fruit glabrous.

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

3–7.5 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, elliptic to oblong, crowded, 6.5–9 × 3–5 mm, length/width ratio 1.7–3, glossy;

wings 0.4–0.8 mm, 15–36% of body width, paler than body;

abaxial ribs not or slightly raised, much lower than lateral wings;

apex rounded to truncate;

oil ducts (2–)3–5 in intervals, 4–6 on commissure.