Stylophorum diphyllum (Michx.) Nutt.
Coefficient of Conservatism: 10
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt P-Forb

Stylophorum diphyllum B. S. Walters

Deciduous forests, rather local.

This is our only native yellow-flowered poppy. The distinctive fat-ellipsoid fruit with hairy body and long beak well distinguishes it from all other species we have in the family, native or not. The leaves are very pale beneath. The petals are 17–30 mm long. Chelidonium majus L. has very similar foliage but smaller flowers and slender fruit.


Allegan County
Antrim County
Barry County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
Eaton County
Grand Traverse County
Ingham County
Ionia County
Kalamazoo County
Kent County
Mason County
Newaygo County
Ottawa County
St. Joseph County
Van Buren County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 30, 2022.