Cyathea elongata is a species of tree fern native to Venezuela and Colombia, where it grows in montane areas at an altitude of 2000-3000 m. The trunk is erect and up to 11 m tall. Fronds are pinnate and usually 2-3 m long. The rachis and stipe are brown, may be smooth to warty and have basal tan scales. Sori occur in small groups towards the base of the pinnule midvein and are covered by cup-like indusia.