Tempskya is a extinct genus of ferns that lived in the Cretaceous time period. In the mod it is four blocks tall, and is climbable like vines. If the bottom is broken, it will then drop itself as an item. It can only be made through cultivating Tempskya Spores with a Culture Vat. Unlike grass, punching it does not destroy the item, and dinosaurs or other prehistoric creatures will not eat it.
Like most other content in the mod, they do not spawn naturally in the world.