Flora of North America species comparison

terete, densely hairy.

pungent, densely hairy, glandular-ciliate;

stipules pectinate, 1–8 × 1–4 mm, with glandular bristles or hairs;

petiole with glandular bristles or hairs;

blade roughly symmetric, 1.5–5 × 1–7 cm, moderately to deeply 3–5-lobed, middle lobe as long as or longer than lateral lobes, margins sharply dentate;

abaxial fine veins weakly to moderately raised, abaxial nectaries absent.

floral tube cuplike, 5–7 mm deep;

sepals white, 17–38 × 6–9 mm;

petals white, 16–30 × 6–12 mm;

corona filament whorls 5 or 6, outer 2 whorls white basally, pale purple apically, linear, terete to transversely compressed, 9–25 mm.

green to yellow-green, ovoid, 20–35 × 18–30 mm.

bracts pinnatifid, 15–35 × 10–28 mm, margins sharply dentate, with glandular bristles or hairs.