Wildflowers of the United States
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Twinleaf - Jeffersonia diphylla


Family: Berberidaceae – Barberry family Genus Common Name: Twinleaf Native Status: Native
Jeffersonia diphylla - Twinleaf. The only other species in the genus is J. dubia, an Asian plant. Jeffersonia diphylla is a species native to the parts of the United States and Canada. It is endangered or threatened in four states – Iowa, New Jersey, New York, and Georgia, where it is found only in a small area of Walker County.
Distribution of Jeffersonia diphylla in the United States and Canada:
USDA Plants Distribution Map
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2009. The PLANTS Database (http://plants.usda.gov, 08 Sep 2010). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

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Site: Pigeon Mountain - East Date: 2010-March-27Photographer: Gerald C. Williamson
Basal leaves are up to 6 inches tall and have a pair of kidney-shaped leaflets. The solitary flowers have 8 white petals, 8 pale yellow stamens surrounding a green pistil.
Jeffersonia diphylla

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2010
Photographs Copyrighted by the named photographer


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