I bought this begonia in May in nursery as B.grandis (hardy begonia), planted it in shady spot in my garden, but in 3 month it did not grow any one leaf, so I took it inside. Now it's growing a little.

I compare this one with pictures of B.grandis online and see big difference. What it may be? (On the picture it's in a 4 inch pot)

Thanks!

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