My Guess---
Scorpion Tounge
I grew this last year but picked and canned at green stage. Got a late start last year due to moving. I asked tradewinds seeds for a description the other day as i wasnt sure if i wanted to grow again...here was his repsponse
It's called Scorpion Tongue, (sometimes Black Scoprion Tongue even though it isn't black). The fruits eventually ripen to red, but go through a yellow and purple intermediate stage. Here is the description:
---A rare and moderately hot pepper with wrinkled fruits that ripen through yellow and orange to red. Small to medium sized plants bear well. The fruits have a somewhat blocky, tongue-like shape. Along with its hot flavor, the Scorpion Tongue is quite unique in shape and makes an attractive ornamental. 80 days.