Arisaema

1. Leaflets 5–13; spadix very slender and long-tapering, much exceeding the spathe at flowering time.

A. dracontium

1. Leaflets 3; spadix shorter than spathe.

A. triphyllum

All species found in Arisaema

Arisaema dracontiumGREEN DRAGON, DRAGON-ROOT 
Arisaema triphyllumJACK-IN-THE-PULPIT, INDIAN-TURNIP 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 16, 2018. https://michiganflora.net/genus.aspx?id=Arisaema.