Scrophularia

1. Staminodium greenish or yellowish, the free apex usually distinctly broader than long; mature capsules (5–) 6–9 mm long; larger leaf blades truncate to rounded at base, never cordate.

S. lanceolata

1. Staminodium dark brown or purple (very rarely green), the free apex scarcely if at all broader than long; mature capsules 4–6 (–7) mm long; larger leaf blades often cordate.

S. marilandica

All species found in Scrophularia

Scrophularia lanceolataEARLY FIGWORT 
Scrophularia marilandicaLATE FIGWORT 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 28, 2017. http://michiganflora.net/genus.aspx?id=Scrophularia.