Google Dawn Redwood.

The Dawn Redwood or Metasequoia glyptestroboides is a deciduous conifer.

A Redwood is not an organism, however it is a type of tree. There are three types of redwoods: the giant sequoia, the dawn redwood, and the coast redwood.

I do not believe that Metasequoia glyptostroboides the dawn redwood is poisonous. I can find no reference anywhere to this . But it isn't something you should be eating anyway.

Giant Redwood, Dawn Redwood, Giant Sequoia.