Botanical name: Sommieria leucophylla
Common name: Sommieria
Family: Arecaceae / Palmae
Origin: New Guinea
The crown holds numerous, usually entire, deeply bifid leaves that are dark green above and silvery white to golden below.
In cultivation it is still very rare. It is slow growing and requires a protected spot in the tropical garden with ample moisture.
Link to this plant:
https://toptropicals.com/catalog/uid/sommieria_leucophylla.htm