Need help with indentifying flowers

I am attaching some flowers that hopefully I can get some help in identifying.
Thanks in advance

 

#2 Argemone spp.

 

#4 thistle
Photos of other parts of all these plants would help.

 

Nice photos though quite exotic for me to know! Will they become on sale after having been named?

Cheers Harri

 

#5 Pontederia cordata?

 

Harri.... YES..
As soon as I know what they are I will be listing them in my store on eBay
Here is the url
http://stores.ebay.com/3rd-Eye-Images

Thanks....

 

Tipularia,
Not sure if I would have photos of other parts of the plants

 

#4 is definitely a common scotch thistle.

 

#3 could be Pseudobombax