Habitat:
All within yearly flood level of the river. More or less natural floodplain marshy vegetation, with Cyperaceae, Eupatorium perfoliatum, Elymus virginicus, Asclepias incarnata, Phalaris arundinacea, Cornus amomum, Stachys hispida, Acer saccharinum.
Occurrence Remarks:
Shrub 3.5 m. tall. Fruit green.