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Jeffersonia (Thomas Jefferson, third president of the United States). Berberidaceae. Attractive hardy perennial herbs.
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Rhizomatous: lvs. radical, palmately nerved, 2-lobed or 2-parted: fl. solitary on a naked scape; sepals 4, petaloid but fugacious; petals 8, flat, larger than sepals; stamens 8, free, with slender filaments; ovary single, the style 2-lobed at apex: fr. a caps., partially circumscissile near summit.—Two species, 1 in E. N. Amer. and 1 in Manchuria. The oriental species, J. dubia. Benth. & Hook., seems not to be in cult.
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:''This article is about a plant; for the town in Pokemon Diamond and Pearl, see [[Sinnoh#Twinleaf Town|Twinleaf Town]]
:''This article is about a plant; for the town in Pokemon Diamond and Pearl, see [[Sinnoh#Twinleaf Town|Twinleaf Town]]