Flora of North America species comparison

angular when young, glabrous.

terete, sparsely hairy, (bark not corky).

weakly pungent, glabrous;

stipules subreniform, 10–20 × 5–10 mm, glandular-serrate;

petiole glandular, glands clavate;

blade roughly symmetric, 3–10(–16) × 4–11(–14) cm, deeply (3–)5–7(–9)-lobed, middle lobe as long as or longer than lateral lobes, margins entire but often serrate basally on lobes;

abaxial fine veins prominently raised, abaxial nectaries scattered along margins.

not pungent, glabrous or subglabrous to short-hairy, not soft-hairy;

stipules linear-subulate, 2–5 × 0.5–1 mm, eglandular;

petiole glandular, glands cuplike;

blade roughly symmetric, 2–7 × 2.5–16 cm, as wide as to usually wider than long, 3–9-lobed, primary lobes 3 and often further lobed, lobes acute, middle primary lobe much shorter than to ± as long as lateral 2 primary lobes, margins entire;

abaxial fine veins moderately to prominently raised, abaxial nectaries usually absent, sometimes present near leaf margins but not forming lines.

floral tube cuplike, 4–5 mm deep;

sepals white, 20–35 × 10–15 mm;

petals white, 20–40 × 10–15 mm;

corona filament whorls 4, outer filaments dark purple basally, white medially, purple apically (rarely entirely white), linear, terete to slightly flattened, 10–20 mm.

floral tube absent;

sepals green, 6–10 × 2–4 mm;

petals absent;

corona filament whorls 2, outer filaments purple basally, yellow apically, or yellow throughout, linear, terete to slightly transversely compressed, 3–7 mm.

yellow-orange to orange, ovoid to ellipsoid, 30–50 × 30–35 mm.

dark blue to black, globose to dorsiventrally compressed, 6–12 × 6–12 mm.

bracts ovate to ovate-oblong, 15–25 × 10–15 mm, margins entire or weakly serrate, eglandular.

bracts obscure, linear-subulate, 1 × 0.2–0.5 mm, margins entire, eglandular.

= 18.

= 24.