Need help to identify this plant (supposedly mangosteen)

[homariono]

Hello to all, About three months I planted some seeds believing they were mangosteen. But I don't think these seedlings are indeed mangosteen. Is there anyone on the forum that could identify these seedling?! Thanks in advance.

Seed :

 

[Twigs]

I can’t Identify your plant,
but it is not Mangosteen.

http://erdb.denr.gov.ph/files/publications/rise/r_v31n1.pdf

 

[homariono]

I think it's a kind of little peach

 

[homariono]

I can’t Identify your plant,
but it is not Mangosteen.

http://erdb.denr.gov.ph/files/publications/rise/r_v31n1.pdf

Thank you

 

[Marck]

I'm not certain, but the stipules and seeds do remind me of Acalypha in the Spurge Family (Euphorbiaceae). Anyway, there are 438 species of Acalypha, according to Kew. Any pictures with flowers, perchance?

 

[Mrsclem]

Looks like Ziziphus jujube- jujube or red date.

 

[Marck]

Yes, that may be it. In that case, those pyrenes (not seeds) are quite small, but there are many cultivars of Jujube (Zizyphus jububa), perhaps this is one with small fruit.