Alsophila spinulosa, synonym Cyathea spinulosa, also known as the flying spider-monkey tree fern, is a species of tree fern in the family Cyatheaceae.
The trunk of this species can grow to a height of 5 m or more. The stipes are persistent, spiny and purplish towards the base, and covered in brown shiny scales. Fronds are 1–3 m long and three-limbed. The sori, producing the spores, are large and round. Like many tree ferns, it features a 'skirt' of dead leaves that do not drop off the crown and form ...