Some sprouting potatoes I’d left too long in the depths of my pantry were eventually discovered and ended-up in the compost bin, where they grew prolifically. They flowered and produced fruit very similar to unripe tomatoes. It was the first time I’d seen such a thing and it lead me on an amazing journey of discovery I wanted to share with others who (as I was until very recently) might not be familiar with Solanum, TPS, and Solanaceae alkaloids.

According to Joseph Lofthouse, a man who strikes me as being both pragmatic and a learned survivalist (and with regards to this post, seed propagator), “Potato seeds are harvested from potato fruits. The pollinated seeds are called "True Potato Seed" (TPS) to differentiate them from "seed potatoes" which are genetically identical clones of a tuber.”

Landrace Gardening: True Potato Seeds (Joseph Lofthouse, Courtesy of Mother Earth News)
http://www.motherearthnews.com/organic-gardening/potato-seeds-zbcz1307

What fruit is growing on my potato plants? (Michigan State University)
http://msue.anr.msu.edu/news/what_are_those_fruit_growing_on_my_potato_plants

What is a Potato Fruit; From the Ground Up (University of Wyoming)
https://www.youtube.com/watch?v=VlUruv7xjeA

The Wiki lowdown (boom! You know it);
https://en.wikipedia.org/wiki/Potato_fruit

https://en.wikipedia.org/wiki/Potato

Digressing here;

https://en.wikipedia.org/wiki/Solanaceae

https://en.wikipedia.org/wiki/List_of_Solanum_species