Thanks for appreciation.
Arjen wrote:are you sure this is 'domino'? it looks like an E. subdenudata to me
beautiful flower though!
I think he may be just a cultivar / selection oe a variety of E.subdenudata.
Here, the label of original pot, how I bought this cactus.
It is Dominos no Domino. I edited the topic title, the name to be exactly as on label. Sorry for this.
On the side of the label (not shown in picture), is mentioned: Altman Plants Vista, CA.
On the web page of Altman Plants, searching for Echinopsis I found http://www.cactusshop.com/library/products.aspx
Under common name they have "Domino Cactus". I suppose it is the same, even for the genus it is mentioned Pseudoechinopsis.
I can't find anything about genus Pseudoechinopsis. Maybe it is about thee section Pseudoechinopsis, of the genus Echinopsishttp://www.erowid.org/references/refs_view.php?ID=7114
But, I don't have an overview of the genus Echinopsis, so all these are just guesses.
Comparinghttp://www.cactusshop.com/library/Image ... px?id=2830
andhttp://www.cactusshop.com/library/Image ... px?id=1509
First I noticed a difference in the appearance of areole. In the first case the areole wool appear more like big dots. In the second case, E subdenudata, they appear like short horizontal stripe.
The difference of ribs can be due to the different age of plants or other causes. Or it can be and a real difference.
To be noted the difference in minimum temperature indicated.
I noticed the areole on the first photo and on the other photos presented below on the page. That make me to suppose to be just an cultivar of E.subdenudata.
In cases like this I prefer to keep the label name, hoping the more information will be available in time.
I do not know if it is a registered cultivar or just a trade name.
I have not noticed the flower to have perfume. But maybe next flowers will have, or maybe I was not able to notice it.