I am looking for Alternanthera sessilis. It is also known as Joyweed.

It is nutritious and very tasty. It has medicinal value according to Ayurveda.

This was my favorite leafy vegetable when I was growing up. I tried to locate the seeds here in US but no luck so far. Here is more info:

http://davesgarden.com/guides/pf/go/31894/.

Appreciat any help in locating this