Which plant features green, ribbon-like leaves with small whitish-yellow flowers visible in late summer?

The plant that features green, ribbon-like leaves with small whitish-yellow flowers visible in late summer is wild celery. This aquatic plant, also known as Vallisneria, tends to grow in shallow waters and is characterized by its elongated, strap-like leaves that can resemble celery. The flowering occurs above water, producing small, often overlooked flowers that typically bloom in late summer, adding to its distinguishing features.

Coontail, sago pondweed, and southern naiad differ significantly in their morphology. Coontail has a more bushy appearance with submersed, whorled branches and does not produce noticeable flowers above water. Sago pondweed is characterized by its broad, flat leaves and produces flowers that are not small and whitish-yellow in the way described. Southern naiad features elongated, narrow submersed leaves but lacks the ribbon-like appearance and flower characteristics associated with wild celery. Understanding these distinct traits is essential in identifying aquatic plants effectively.