Flora of North America species comparison

erect, usually branched.

erect or ascendent, 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.

blade obovate, 4–10 × 1–2.5 cm, margins entire or ternately to biternately lobed (lobes 1–3 pairs, narrow-oblong or lanceolate-linear, margins flat or repand), surfaces scabrous or glabrous.

(dense) 20–40 cm;

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

10–20(–50) cm;

bracts caducous, oblong-linear, 2–4 mm.

2–8 mm.

3–7 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.

(rarely polygamous);

sepals persistent or tardily deciduous, (5–)6, not reflexed in fruit, linear-oblong, 3–4 mm;

petals (5–)6, yellow, 2–5 mm, rounded-clawed, adaxial ones trisect, lateral lobes semilunate or falcate, margins entire or incised;

stamens (12–)14–18;

filaments deciduous, 1.5–3 mm, scabrid-papillose;

intrastaminal nectary-discs pilose;

anthers 0.9–1.5 mm;

placenta entire.

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

usually erect, 3-carpelled, cylindric or ovoid to subglobose, 7–15 × 4–6 mm, apically 3-toothed, glabrous or papillose, ribs scabrid.

1–1.3 mm, dull, finely papillose.

1.4–2 mm, glossy, smooth (carunculate).

= 40.

= 48.