probably hybrid of Epidendrum secundum type

Thanks!

I think I might have found a match. Epidendrum ibaguense..
https://www.google.be/search?q...

I am looking at it again.
Now I learned some time ago that the blooms on ibaguense and also radicans are resupinate, while those belonging to the secundum type complex are non-resupinate. That means when you look at an individual bloom, the column and lip would face upwards on secundum, while while facing downwards on ibaguense and also on radicans. Yours faces upwards - looking at the cute orange yellow lip, it is definitely up. That means it is not ibaguense.

Thanks for the explanation Ursula, but I'm not familiar with the terminology used; 'secundum' does it mean a 1st generation of hybrid derived from two different species of Epidendrum? A first generation hybrid..
The genus name Epidendrum would still apply then?

It is an Epidendrum. It seems there are a few Epidendrum secundum types, ( lower case implies species) depending where in South America you look. I would think you look at small local differences, hence secundum is many times referred to as secundum type complex.
I wouldn't know what exactly applies to your plant, is it secundum type species, or is it a very closely related hybrid with a secundum type.
One thing is certain, it is not radicans or ibaguense.

maybe a 'subspecies' would then mean the same as a 'secundum' type?

Perhaps. I just wouldn't feel comfortable nailing a definite 100 % id to this.

This is all very complex indeed, thank you Ursula!

You are welcome, I did my best!