Trunk to 10m. high and about 20 cm. diam; fronds in a dense crown, about 4 m. long, the base expanded into a long sheath surrounding the trunk. Petiole 40-60cm. long, the pinnae about 50 pair, crowded distally; Inforescence several below leaves, freely branched, each forming a mass about 60cm. diam.; young perianth and stamens white. Fruit at length red.