I dug this out of the San Jacinto River bank a few years ago. The flowers are much smaller than the "usual" cannas around here. The closest I can come to IDing it is "Queensland arrowroot plant". Anybody growing this? Am I on the right track? Canna ( photo / image / picture from cherylad's Garden ) Canna ( photo / image / picture from cherylad's Garden )
It is definitely a CANNA. There are many kinds... Big plants, huge leaves and SMALL flowers... or on the contrary, quite small plants with huge blooms. Depends on your luck!