Is it Isotoma fluviatilis or Lobelia pedunculata?

These two species are easily confused. Best way to separate is to take a close up photo of the base of the corolla tube. If slit to near base then Lobelia pedunculata, if not the Isotoma fluviatilis.
https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=fm&name=Campanulaceae

Posted on October 5, 2024 09:00 AM by parks818