Help identifying a strelitziaceae
 

I saw a plant at the grocery store which I thought was a Ravenala (ravenala
madagascariensis), and bought it, but since I read on a website that
strelitzia could resemble it, and then that the whole
strelitziaceae family could be it (phenakospermum, ravenala, strelitzia), I
have doubts. Anyone know about these trees? Any helpful tips on identifying
it ? It was just labeled with the price...

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Yukinoroh