Date: April 8, 2017. Location: private property
| Classification Hierarchy | |
| Kingdom | Plantae |
| Subkingdom | Tracheophyta |
| Superdivision | Spermatophyta |
| Division | Magnoliophyta |
| Class | Magnoliopsida |
| Subclass | Magnoliidae |
| Order | Ranunculales |
| Family | Berberidaceae |
| Genus | Jeffersonia |
| Species | Jeffersonia diphylla |
Date: April 8, 2017. Location: private property
Scientific Name: Jeffersonia diphylla
Common Name: twinleaf
Origin: Native
Notes: Twinleaf is characterized as "rare northeast" in Iowa by Eilers and Roosa and listed as Threatened by the Iowa Natural Resources Commission
Additional references: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11.
