The other Peniocereus in image 2 is maculatus, Harald, and that does put out flowers pretty much every year in high summer here, so I am hoping. Very fragrant.
PTCG, I prefer Neoevansia as I don't think the plant belongs in Peniocereus in a narrow sense. The currently accepted name is Peniocereus viperinus, however.
Greg, the flowers open a few hours before dawn and then are wide open in the early morning, closed by the afternoon. A cool flowering cycle that must have something to do with the pollinator.
peterb
PS, yes, it is one of the oldest from seed. Maybe the oldest.














