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Hydrocotyle

Placed in the Apiaceae (Umbelliferae) in Michigan Flora. Quite different from all our other Araliaceae and sometimes placed in its own family, Hydrocotylaceae.

1. Petioles attached near center of leaf blade (leaves peltate).

H. umbellata

1. Petioles marginal, attached at sinus of a reniform blade.

2. Umbels sessile or subsessile.

H. americana

2. Umbels on long peduncles.

H. ranunculoides

All species found in Hydrocotyle

Hydrocotyle americanaWATER-PENNYWORT 
Hydrocotyle ranunculoidesWATER PENNYWORT 
Hydrocotyle umbellataWATER-PENNYWORT 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. August 18, 2017. http://michiganflora.net/genus.aspx?id=Hydrocotyle.