Reading back the cascabela makes a big fat apple as a fruit so we should have picked up on that between us.
I did this recently - saw a nice convolvulus-type thing in Cyprus and collected some seed. Turned out to be something completely different and fairly ordinary.
I think the stupidest thing I did, and I am hesitant to admit it, is attempt to germinate 'seed' I collected in Mexico of Bocconia frutescens that ended up being buds :oops:
Is this going to turn into 'the silliest garden related misidentification' thread? :)
I once went into the garden for some chives that I needed for a recipe I was cooking. It was pointed out to me later that the plant I had picked from was a tufted sedge. I didn't think it had added much to the flavour of the dish :oops: