Please help ID plants

[wells923]

Hi all,

Finding plants in my area is very difficult. When I find something I tend to buy it and learn later as plants are scarce.

I've posted photos of what I don't know. I've searched online, but still remain uncertain about the actually taxonomy.

Also, if anyone has any advice on care for these plants don't hesitate to share your wisdom.

Any help is appreciated.

 

[wells923]

more photos to assist in identification

Here are some more photos to help identifying the plants.

 

[jetajockey]

That first one looks something like limnophila indica and the second is giant salvinia. Not sure about the 3rd. It looks sorta like ludwigia sedioides, so it could possibly be some sort of floating marginal.