Unknown tall purple orchid

[Mykol]

Hello !

That poor plant was abandonned in a patio, so I adopted it. In September 2012 it bloomed, turned out it was an orchid plant !
But I don't know its name/type, so I can't figure out its specific needs : this year it didn't give me any flowers .

Here in Argentina, they call it an "orquidea del dia", but that doesn't help me.

Does someone have any clues ?

Some pictures : a tall plant with long leaves and one or two thick part producing the flowers.

[reliablefool]

I think it looks more like an iris than an orchid. Similar to Cypella coelestes, but it doesn't look quite the same to me.

[ronaldhanko]

Definitely an Iris and not an orchid, but someone else will have to tell you which Iris and how to grow it.

[WaterWitchin]

I concur with an iris. And they're pretty easy to grow. Just google probably "german iris" and it will give you requirements.

[Mykol]

Thanks for the quick answers !

If we believe Google Images, there is a type of iris called "Neomarica gracilis" which REALLY looks like my plant.

Yes, I found another website, they are saying they come from Brazil and called "false orchids".
The popular name is "Iris of the beach" !

[Vanda lover]

A lot of people mistake irises for orchids. I found that out when I was looking around on ebay.

[Optimist]

It is a beautiful plant. Thank you for adopting. I love orchids, and my second most loved plant is Iris. Very similar in looks.