zoophyte

noun2

1. •
   (historical) An animal thought to have the characteristics of a plant, later specifically an invertebrate of the (former) group Zoophyta, comprising sponges, corals and sea anemones.
2. •
   (historical) A plant believed to have the characteristics of an animal, especially a sensitive plant or vegetable lamb.

   • And besides, as there are many Zoophyts, and sensitive Plants […] so have we, in some Authors, Instances of Plants turning into Animals, and Animals into Plants, and the like […] — 1665