Is anyone of those young plants Arenga tremula?

[Phoenikakias]

There are 6 plants growing each three in a single pot. The seed, where they grow from, is supposed to be from Arenga tremula. I admit that I am entirely clueless as to how a genuine Arenga tremula would look like at this age. So please could you recognize among those 6 plants the possible appearance of tremula?

[Phoenikakias]

Some more pictures

[gyuseppe]

Konstantinos also I have small arenga tremula and I do not see any difference with arenga engleri

 

Besides, even chamaedorea costaricana  and chamaedorea pochutlensis are virtually identical (difference for small detail only of leaf sheath) just for this small detail are two separate species

[Pal Meir]

… and palms with totally different growth habit were merged together to one species (e.g. Lytocaryum insigne > L weddellianum). And the only visible distinct feature of Arenga ryukyuensis can also be seen on A engleri in Taiwan. And earlier Japanese botanists believed that the Arenga growing on Iriomote island were A tremula because of their smaller fruits ………

[Palmdude]

I have both, Tremula is decent sized and Engleris are small. Small   Sucker on the Tremula. I'll try to remember to shoot pics tomorrow