Thank you for your answers. I think the are great.

I have, impatiently I know, given a cut to the top of the two Dendrobium's keikis (a little bit below the basement of the fallen leaves). My asumption (right or wrong): Just to let the plant concentrate on adapting itself by the strong parts rather than on trying to save weaker extensions. What do you think? Will these keikis have a future, anyhow?