Flora of North America species comparison

elongated or sub-umbellate in fruit;

central rachis (0.5–)1.2–10(–25) cm.

(often strongly congested), not elongated in fruit;

central rachis (0.6–)1.2–7(–9) cm.

petals usually lavender to purple, rarely white, (4.5–)5.5–8(–10.5) mm;

gynophore stout, 0.5–1.2(–2.5).

petals usually lavender, rarely white, (5–)6–8.5(–9.5) mm;

gynophore stout, 0.5–1(–3) mm.

usually divaricate to divaricate-ascending, rarelyhorizontal, straight or slightly incurved, not whitish,often slender, sometimes stout, (4–)6–10(–13) mm, not or slightly flattened at base.

horizontal, straight, not whitish, stout, 3–5(–6) mm, strongly flattened at base.

divaricate-ascending to ascending, straight or incurved, (1–)1.5–3(–4) cm.

horizontal or divaricate-ascending to ascending, straight or incurved, (0.9–)1.4–2.7(–3.4) cm.

= 26.