Alsophila montana, synonym Cyathea costulisora, is a species of tree fern native to Sumatra. The trunk is erect and usually 1–4 m tall. Fronds are bi- or tripinnate and 1–2 m long.
The Alsophila montana tree fern, also called Cyathea costulisora, is a type of tree fern found in Sumatra. It has an erect trunk that typically grows 1-4 meters tall and fronds that are bi- or tripinnate and reach lengths of 1-2 meters.