Early Meadow Rue, Thalictrum dioicum
Ranunculaceae or Buttercup Family
 

Short, erect plant.  Flowers, which are in large, branching clusters, have 4 tiny green sepals and abundant yellow-green stamens that droop below the sepals.  Leaves are divided into three leaflets, which have scalloped edges.  Blooms in early spring in forests.

Common in woods on the western slope of the Park.

Waxy meadow rue hasdistinctly different leaves and blooms in early summer.