Typha × suwensis is a plant of hybrid origin, endemic to central Japan named after Suwa Province (諏方国 Suwa no kuni) west of Tokyo. It apparently originated as a cross between the two very widespread species T. latifolia and T. orientalis. Typha × suwensis grows in freshwater marshes.[1]

References

  1. ^ Tatemi Shimizu. 1989. Journal of Phytogeography and Taxonomy 37: 120, Typha x suwensis