Cereus-longispinus
Why does the name Cereus-longispinus have to have some hidden meaning?

* * *
Actually I am just looking at its face value, I certainly don't want to
delve into your personality

* * *
Did you ever consider it might be an actual plant name?

* * *
No, not really. A quick check suggests that it (leaving the hyphen aside)
once was published as a botanical name, but that it is not in use, and
probably has not been in the recent past.
PvR