[1][2] They are small to large, dioecious palms, with solitary, robust grey stems, swollen at base and gradually tapering upward.

The species vary greatly in size, with R. hildebrandtii and R. nana only reaching 4 m, while R. robustior and R. sambiranensis both reach 30 m. The leaves are up to 2–5 m long, pinnately compound, reduplicate, erect at first then arching, twisted near the apex; with numerous crowded narrow ribbed leaflets.

The species listed as critically endangered will most likely become extinct this century unless measures are taken to cultivate new trees and protect their habitats from being disrupted by deforestation and water pollution.

Ravenea rivularis (majesty palm) is widely cultivated in subtropical regions, and it is sold commercially as a houseplant.

Majesty palms prefer full sun, plenty of water, and high humidity to ensure healthy growth.