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No key was found for the requested taxon, but it has only one child: Hydrastis. Showing where it is keyed below.

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Key S2: herbaceous dicots with opposite, simple, and palmately lobed leaves on the stem {add [Humulus] CANNABINACEAE}

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1 Leaf lobes very narrow, < 3 mm wide; inflorescence an involucrate head subtended by phyllaries, the heads solitary or many and variously arrayed in secondary inflorescences, the ovary inferior, the corolla connate and tubular at least basally, the calyx absent, the stamens 5, the fruit a cypsela
1 Leaf lobes broad, >20 mm wide; inflorescence, flower, and fruit structure various, but not with the combination of features as above.
..2 Leaves >4 per above-ground stem; perianth 5-merous; flowers bilaterally symmetrical, the corolla with connate petals, lavender-white with yellow markings in the throat; fruit a large curved capsule
..2 Leaves 1-2 per above-ground stem; perianth 3-merous; flowers radially symmetrical, the corolla absent or with distinct petals, white; fruit a berry or aggregate of berries.
....3 Leaves with peltate petiole attachment; carpel 1; petals present, white
....3 Leaves with petiole attached marginally; carpels many, as separate pistils; petals absent
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