Where are you Pete?
I have a really tiny chiltepin "wilding" in my garden and I get baby volunteers regularly. Not round, enlongated and about a half-inch long - goes from green to purple to bright orange/red when ripe.
Pete, You are on the other end of the valley from me - I'm almost into Apache Junction.
If you want I can mail you some over-ripe fruit and you can harvest the seeds. Would that work for you? I have not looked at the plant in a while - this true wilding can be 4-5 feet tall in a sheltered area and survived all cold except last year's killing frosts. Cracks me up the way the mocking birds like the fruit - they must have asbestos beaks.
You are welcome, Pete - gotta go, probably will call you Monday - Evening best?
I saw a few at summer winds nursery
" I'm at the end of my supply"
Since they are from Mexico why not try to preserve the strain by harvesting and planting some of the seeds from the few remaining peppers? It will have unique traits from growing in Mexico. Grabbing some from Catherine which will be acclimated to our area would be cool too. You can grow them in two separate patches and see if there is a difference.