What is this species

[jukkaduei]

I found it in my garden but I really don't know it's species. Some people tell me it's peppermint but I'm not sure.
It have a small yellow flower but it don't have its flower in this time
And I want to know its usage.
https://imgur.com/gallery/b8sFc

[fermi de Sousa]

Hi jukkaduei,
I don't think peppermint has yellow flowers.
What shape were the flowers and were they held singly or in a bunch or a spike?
cheers
fermi

[Oron Peri]

Try Impatiens capensis

[jukkaduei]

Hi jukkaduei,
I don't think peppermint has yellow flowers.
What shape were the flowers and were they held singly or in a bunch or a spike?
cheers
fermi

It's flower is like this
https://imgur.com/gallery/TriG7

[jukkaduei]

Try Impatiens capensis

That's still not right

[Alan_b]

The flower looks very like a Lesser Celandine, Ficaria verna, but if it really is attached to those leaves then that cannot be correct.  Nothing in the Mint/Dead Nettle family (Lamiaceae) has flowers remotely like the one in the picture.

[Oron Peri]

Acmella oppositifolia

[jukkaduei]

Acmella oppositifolia

Oh! That's so close. But I've already found it's correct species.
It's Acmella ciliata

Thank you for everyone to answer me
But I still need to know it's information. It's not in wikipedia.

[Maggi Young]

You may be able to find more information about this South American plant  via one of its many synonyns :
http://www.theplantlist.org/tpl1.1/record/gcc-134628

[jukkaduei]

You may be able to find more information about this South American plant  via one of its many synonyns :
http://www.theplantlist.org/tpl1.1/record/gcc-134628

American??? HOW?
I'm live in Thailand...

[Maggi Young]

A very large number of all the plants that can be seen in any country are not native there - plants, like people, move around the world!

[Oron Peri]

jukkaduei, it is not Acmella ciliata.

Acmella ciliata has very short, tipical petals and a much thicker pedicel.