(Threadleaf Mock Bishopweed - Atlantic Bishopweed - Herb William)
Apiaceae / Umbelliferae (Parsley) Family
Plant is an upright, slender, branched annual herb. Preferred habitat is near brackish or fresh water marshes, swamps, sloughs, swales, pond margins and ditches. Distribution is throughout the Escambia region.
Leaves are filiform segments; smooth and stalked; stalks clasping the stem; twice compound (divided into two or more segments); divisions spreading.
Flowers are white (rarely pink); small, flat-topped unbels 2-5 cm across at top of slender stems; long stalked and overlapping the adjacent leaf. Flowers occur in the spring and early summer.
Fruit is oval-shaped; sub-orbicular, once-compound umbels.