Open water slough, edge, shallow water, with Lemma sp.
in red box, captured incidentally
AKA Azorella polaris.
Araliaceae is a family of flowering plants, also known as the Aralia family (after its type genus Aralia) or ivy family. The family includes 254 species of trees, shrubs, lianas and perennial herbaceous plants in two subfamilies. Species usually bear pinnately or palmately compound leaves, and usually have small flowers produced in large panicles.