Alsophila alderwereltii, synonym Cyathea alderwereltii, is a species of tree fern endemic to Mount Sago in central Sumatra, where it is nevertheless abundant and grows in forest at an altitude of 1000–1500 m. It has an erect trunk which may be 4 m tall or more. Fronds are bi- or tripinnate and 1–2 m long.
Alsophila alderwereltii, also known as Cyathea alderwereltii, is a tree fern species found exclusively in Mount Sago of central Sumatra. It thrives at an altitude of 1000–1500 meters and is abundant in the forest. The fern has an upright trunk that can reach up to 4 meters tall, and its fronds are bi- or tripinnate, measuring 1–2 meters long.