This plant is most likely one of the two false pimpernel species ( Lindernia sp .) a small aquatic herb that is usually 1 to 3 decimeters high. At first glance I thought it was water hyssop, Bacopa caroliniana , but the flower is bluer on Bacopa. The two false pimpernel species are usually distinguished by the length of the flower stem. The one you picture has a long stem, longer than the leaves from which it originates and is thus most likely Lindernia anagallidea. Hope this helps.


Jeff Henson, Natural Resource Specialist IV
TPWD Inland Fisheries
Bryan, Texas