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DescriptionPerennial herb with tuberous or creeping rhizome. Leaves radical, entire or deeply lobed. Flowers umbellate, bisexual, actinomorphic; bracts forming an involucre, the outer broad, the inner (in ours) long and thread-like. Perianth: tube short; lobes 6 in two rows. Stamens 6. Ovary inferior, 1-locular; style short, the three stigmas often petaloid and reflexed over the style. Fruit a berry or rarely opening by valves. Seeds numerous.