Twinleaf Jeffersonia diphylla (Linnaeus) Persoon    
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Ranunculales   >   Family Berberidaceae   >   Genus Jeffersonia   

Status:

Jeffersonia diphylla is a spring-blooming perennial of forests of eastern North America. It was named in 1792 by Benjamin Smith Barton, professor of botany and natural history at the University of Pennsylvania, to honor his friend and fellow natural history enthusiast, Thomas Jefferson. Its flowers last only a few days, often appearing about the time of Jefferson’s birthday, April 13, but are earlier some years.

Description:

The flowers of Jeffersonia diphylla resemble those of bloodroot (Sanguinaria canadensis) and bloom about the same time as Bloodroot, but Jeffersonia diphylla belongs to a different family from Bloodroot. The blooms last only a few days. The leaves are not actually twin or double, as the common name and the species epithet suggest, but rather are single and deeply divided into two, half-ovate leaflets. The unusual fruit capsule opens by a lid near the tip to release the seeds.

Where to find:

Jeffersonia diphylla grows in rich woods, most commonly in the mountains, but also on slopes and floodplains along streams of the Piedmont.

There are 120 records in the project database.

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Twinleaf in bloom in Washington Co., Maryland (4/8/2013). Photo by Ed Boyd. (MBP list)

Twinleaf in bloom in Washington Co., Maryland (4/6/2019). Photo by Jim Brighton. (MBP list)

A Twinleaf in Montgomery Co., Maryland (4/6/2014). Photo by Judy Gallagher. (MBP list)

Twinleaf in Washington Co., Maryland (4/15/2018). Photo by Bill Hubick. (MBP list)

Twinleaf post bloom in Washington Co., Maryland (4/21/2013). Photo by Jim Brighton. (MBP list)

Twinleaf in Montgomery Co., Maryland (3/30/2021). (c) martharosetta, some rights reserved (CC BY-NC). Photo by martharosetta via iNaturalist. (MBP list)

Twinleaf in Montgomery Co., Maryland (4/9/2019). (c) Dave, some rights reserved (CC BY-NC). Photo by Dave via iNaturalist. (MBP list)

Twinleaf in Washington Co., Maryland (3/27/2020). (c) ptbrnchbob, some rights reserved (CC BY-NC). Photo by ptbrnchbob via iNaturalist. (MBP list)

Twinleaf in Washington Co., Maryland (4/20/2014). Photo by Bill Hubick. (MBP list)

Twinleaf in Washington Co., Maryland (4/15/2018). Photo by Bill Hubick. (MBP list)

Twinleaf in Washington Co., Maryland (4/6/2020). (c) prettycoolman, some rights reserved (CC BY-NC). Photo by prettycoolman via iNaturalist. (MBP list)

Twinleaf in Washington Co., Maryland (4/8/2017). Photo by Bill Hubick. (MBP list)

Twinleaf in fruit in Washington Co., Maryland (4/8/2017). Photo by Bill Hubick. (MBP list)

Twinleaf in Washington Co., Maryland (4/5/2020). (c) kbarylski, some rights reserved (CC BY-NC). Photo by kbarylski via iNaturalist. (MBP list)

Twinleaf in Montgomery Co., Maryland (5/2/2011). Photo by R. Child. (MBP list)

Twinleaf in Montgomery Co., Maryland (5/20/2018). (c) yakfur, some rights reserved (CC BY-NC). Photo by yakfur via iNaturalist. (MBP list)

Twinleaf in Montgomery Co., Maryland (3/30/2020). (c) Daniel McClosky, some rights reserved (CC BY). Photo by Daniel McClosky via iNaturalist. (MBP list)

Twinleaf in Montgomery Co., Maryland (3/30/2020). (c) Daniel McClosky, some rights reserved (CC BY). Photo by Daniel McClosky via iNaturalist. (MBP list)


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