Update - the majority of the seeds didn't germinate. After referring to a book that shows the development of the embryos I now realize the pic I posted above is an ungerminated seed. I have some green protocorms in only one flask.
I picked up a bunch more fresher seeds and will try again soon with the tropical ones.
I ended up with a several green pods of local Cyp. acaule and started some mother flasks last week - no contamination so far so wish me luck. Of course it had to be the most difficult one