Identificaciones de tizianoluka

These Austrocactus (A. coxii?) plants were growing in the Monte vegetation, which begins where the slope of the rock disappears and soil begins to form over the underlying rock. They were common in this shrub community, characteristically growing in groups of columns (pictures 1, 4, and 5).

The AI app suggests this is a species of Echinopsis, but I think not. To me it is similar to the Austrocactus coxii (?) that are also common here. The difference between these two cacti is that this one grows as a tall, SINGLE column, while, the tentative, A. coxii occur as smaller, grouped columnar plants. The taller species is named A. bertinii, and perhaps that is what these plant are?

None of the cacti at this locality were in flower, so I don't have that character to help in identification.

These cacti grow in the Monte vegetation that forms at the point where the rock slope starts to have a permanent soil cover. They are easy to see because of their height and that they grew in the open spots (picture 8).