Echinocereus ID please

[Wilk]

This plant originally just appeared in a pot where something else was growing, got so large it gained its own pot, developed 4 stems, flowered large and pink, then got rot at the centre, got chopped into 4 bits and has now rooted again. But what is it? I have always thought it might be Stramineus but I might be wrong.

[cactushobbyman]

Echinocereus engelmannii ????

[tumamoc]

I'll take a stab at it--Echinocereus enneacanthus.

[Tony]

My first impression was stramineus as well.
Do you have an image of the flower?

[greenknight]

Maybe E. nicholii.