Alsophila spinulosa is a unique group of true ferns. Most species of Alsophila spinulosa have erect stems, which are the same shape as trees. Alsophila spinulosa is the only plant that once lived in the same era as dinosaurs, and it is often called "tree fern".
Alsophila spinulosa is a fern of Alsophila spinulosa, with a tall stem and a residual petiole on the upper part. The leaves are large and rectangular; Pinions alternate and rectangular; Veins pinnately split on lobes, and the lower veinlets at the base come from the base of midvein; The leaves are papery, green after drying, evergreen all year round, and have no phenology. The name of spinulosa spinulosa is transliterated from Sanskrit.