Flora of North America species comparison

erect, usually branched.

(cauline shorter distally);

blade ovate to ovate-oblong, pinnatisect (lobes 4–15 pairs, lanceolate-oblong), 3–15 × 3–5 cm, (base attenuate), margins entire or repand to raggedly toothed, surfaces glabrous.

(dense) 20–40 cm;

bracts persistent, lanceolate-linear, 3–3.5 mm.

2–8 mm.

sepals persistent, 5(–6), not reflexed in fruit, lanceolate-linear, 2–2.5 mm;

petals 5(–6), white, (3.5–)4–6 mm, subrounded-clawed, adaxial ones 3-lobed;

stamens 10–14;

filaments persistent, 2–3.5 mm, glabrous;

intrastaminal nectary-discs papillose;

anthers 1–2 mm;

placenta entire.

erect, 4-carpelled, cylindric to ovoid-oblong, 8–14 × 4–6 mm, apically 4-toothed, glabrous or ribs papillose.

1–1.3 mm, dull, finely papillose.

= 40.