Identification: Calathea/Maranta identification help please!

Hey folks,

Can anyone identify this calathea/maranta species?
So far my research has said calathea warscewiczii, but this name doesnt seem to be well known when searching to buy a new plant!

Many thanks in advance!

:)

(PS Ignore the anthurium flower in the pic, this photo was taken at a botanical garden)

 

Looks like Goeppertia warszewiczii (syn. Calathea warszewiczii). Note the slight difference in spelling.

PlantFiles: Goeppertia Species, Calathea, Prayer Plant