Rhaphidophora hayi is a shingling (climbing) aroid from tropical Asia, closely related to Monsteras and Philodendrons.
Rhaphidophora hayi is very unusual. Unlike most aroids the leaves do not morph into something larger as it matures. Instead it grows leaves maybe as large as 5 inches and as small as 1/2 inch that will shingle up anything it can climb making a dramatic effect.
This plant is not often offered but does great as a terrarium or vivarium plant. Also does well as a house plant if misted regularly.
The picture shows the actual plant you will receive.