Yes, but bear in mind, biology is not static; mutation, selective breeding, environmental effects, can dramatically affect all life forms. Plus human biology has changed over time as well. (Most decendents of northern european ancestors for example have genes affected by the significant evolutionary pressure of old style bubonic plague; just one example; of course, every living creature refects the evolution of its ancestors.)
My point: the decendents of ancient plants may, or may not, have the properties in which one is interested.
But still, kinda interesting, could be informative, could be inspiring?